Drilling pressurizing device of drilling machine and drilling machine

Abstract

The utility model relates to the technical field of drilling machines, and particularly discloses a drilling pressurizing device of a drilling machine and the drilling machine, the drilling machine comprises a mast, a power head, a drilling rod and a pressurizing device, the pressurizing device comprises a container, the container is fixed on the power head, an inlet and an outlet are arranged on the container, and the mast is fixed on the drilling rod. When the container is used, materials can be supplied into the container through the inlet, the overall weight of the container can be increased, the gravity of the container can be used for increasing the downward pressure of a drill rod, the drill rod can pass through a complex geological layer, and under the normal condition, the materials in the container can be discharged through the outlet, so that the overall weight of the container can be reduced; meanwhile, the downward pressure of the drill rod can be reduced, abrasion to the power head and the drill rod is reduced, meanwhile, energy loss during lifting of the drill rod can be reduced, and due to the fact that the feeding amount can be freely controlled, selection can be conducted according to the actual downward pressure requirement.

Description

Technical Field

[0001] This utility model relates to the technical field of drilling machines, and specifically to a drilling pressurization device and a drilling machine. Background Technology

[0002] Traditional drilling machines typically consist of a frame comprising an operating table and a mast, and a power head that slides vertically along the mast. The power head drives the drill rod to rotate via a transmission connection to perform drilling operations. During drilling, the rotational power of the drill rod comes from the power head, while the drilling force is mainly provided by the power head and its own weight.

[0003] In existing technologies, in order to overcome the resistance caused by complex formations (such as hard interlayers and sand layers), some drilling machines will increase the self-weight of the power head and drill pipe or use counterweights to increase drilling force.

[0004] However, this method has the following drawbacks:

[0005] 1. High wear and maintenance costs: Long-term mounting of counterweights will greatly increase the wear of key components such as the power head oil seal, leading to frequent repairs and replacements, which increases construction difficulty and production costs;

[0006] 2. Poor flexibility: Due to the presence of the counterweight, additional weight needs to be borne when lifting the drill and pulling out the rod, which reduces construction efficiency and is inconvenient to disassemble;

[0007] 3. Increased energy consumption: Continuously carrying counterweights will also increase unnecessary energy consumption when no additional pressure is required. Summary of the Invention

[0008] This utility model addresses the aforementioned problems. Its purpose is to provide a drilling pressurization device and a drilling machine. By introducing or discharging liquid into or out of a water tank, the drill rod can be pressurized and depressurized. This is convenient and quick, and also reduces the wear of the power head and energy loss.

[0009] To achieve the above objectives, this utility model provides a drilling pressurization device for a drilling machine. The drilling machine includes a power head and a drill rod. The upper end of the drill rod is connected to the power head. The power head is used to drive the drill rod to rotate. The pressurization device includes a container, which is fixed to the power head. The container has an inlet and an outlet.

[0010] Material can be supplied into the container through the inlet to increase the downward pressure of the drill rod, and material can be discharged through the outlet to reduce the downward pressure of the drill rod.

[0011] According to the above-described drilling pressurization device for a drilling machine, the container is a water tank, the water tank is fixed to the bottom of the power head, and the upper end of the drill rod can pass through the water tank and connect to the power head.

[0012] The drilling pressurization device for a drilling machine described above also includes a water injection pipe and a drain pipe. One end of the water injection pipe can extend into the water tank through the inlet, and one end of the drain pipe can extend into the water tank through the outlet.

[0013] The drilling pressurization device for a drilling machine described above also includes a water pump, which is installed in the water tank and connected to the drain pipe.

[0014] According to the above-described drilling pressurization device for a drilling machine, the inlet and the outlet are arranged at intervals on the top or side of the water tank.

[0015] The drilling pressurization device for a drilling machine described above also includes a water injection pipe. The inlet is arranged at the top of the water tank, and the outlet is arranged at the bottom of the water tank. One end of the water injection pipe can extend into the water tank through the inlet.

[0016] The drilling pressurization device for a drilling machine described above also includes a switch located inside the outlet and used to control the outlet to open or close.

[0017] According to the above-described drilling pressurization device for a drilling machine, the water tank is provided with mounting holes on both the top and bottom, and the upper end of the drill rod can pass through the two mounting holes and connect to the power head.

[0018] According to the above-described drilling pressurization device for a drilling machine, the width of the water tank is the same as the width of the bottom of the power head, and the length of the water tank is the same as the length of the bottom of the power head.

[0019] A drilling machine, comprising:

[0020] mast;

[0021] The power head is mounted on the mast in a height-adjustable manner;

[0022] The drill pipe, the upper end of which is connected to the power head;

[0023] The pressurizing device described above is fixed to the power head and is used to increase the downward pressure on the drill pipe.

[0024] This utility model has the following beneficial effects:

[0025] 1. Pressurization is achieved by filling the water tank and depressurization is achieved by draining the water tank. This reduces wear on the power head sealing device and is convenient and quick.

[0026] 2. Since the water tank itself is free of weight when pressurization is not required, the need for long-term hanging of counterweights is reduced, the wear of the power head oil seal and other components is reduced, and the energy consumption during drilling is reduced, which helps to extend the service life of the equipment.

[0027] 3. Water can be used as a medium for pressurization, which is more environmentally friendly than traditional methods. The pressurization level can be adjusted as needed, achieving more efficient energy utilization. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the drilling machine in the embodiment;

[0029] Figure 2 This is a schematic diagram of the overall structure of the pressurization device in the embodiment;

[0030] Figure 3 This is a schematic diagram of the water tank structure in an embodiment;

[0031] Figure 4 This is a schematic diagram of the top structure of the water tank in an embodiment.

[0032] In the picture:

[0033] 1. Power head; 2. Drill rod; 3. Water tank; 4. Water injection pipe; 5. Drain pipe; 6. Water pump; 7. Mounting hole; 8. Mast. Detailed Implementation

[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0035] like Figure 1-4 As shown, a drilling machine includes a mast 8, a power head 1, a drill rod 2, and a pressurizing device. The mast 8 provides support for the power head 1 and the drill rod 2. The power head 1 is vertically mounted on the mast 8. The upper end of the drill rod 2 is connected to the power head 1. The power head 1 drives the drill rod 2 to rotate. The pressurizing device is used to pressurize the drill rod 2 when it encounters complex geological conditions, ensuring that the drill rod 2 can be drilled smoothly.

[0036] In the drilling machine, the mast 8 not only supports the power head 1 and the drill rod 2, but also plays the following roles: guiding, maintaining verticality, and improving safety.

[0037] The guiding function refers to the mast providing a vertical guiding channel for the power head 1 and the drill pipe 2, ensuring that the drill pipe 2 can drill straight down along the predetermined path and prevent deviation.

[0038] Maintaining verticality means that during the drilling process, keeping the drill rod 2 vertical is crucial to ensuring drilling quality. The mast 8 can help maintain this verticality through its rigidity and precise manufacturing tolerances, reducing errors caused by tilting.

[0039] Enhanced safety refers to the robust mast design, which strengthens the safety of the entire drilling system, especially when dealing with complex geological conditions. It can effectively resist the influence of external forces, such as lateral forces or vibrations, ensuring the safety of construction personnel.

[0040] In this embodiment, complex geological conditions refer to the presence of multiple strata with different properties in the geological structure. These strata have significantly different physical characteristics, posing additional technical challenges to drilling operations. Specifically, complex geological conditions may include the following types:

[0041] Hard interlayers: Hard rock or rock layers, such as pebble layers, boulder layers, or dense sandstone and shale, are embedded in relatively soft strata. These strata significantly increase drilling resistance, making it difficult for conventional drilling equipment to penetrate.

[0042] Sand layer: Loose and highly mobile sandy soil can easily cause the gaps around drill rod 2 to be not filled properly, leading to hole collapse during drilling. In addition, particles in the sand layer may wear down the drill bit and other drilling tool components.

[0043] Clay layer: Highly plastic clay can form mud cakes that can coat the drill bit, reduce its cutting efficiency, and may cause the drill bit to get stuck. At the same time, the expansion of clay when it comes into contact with water will also increase the difficulty of drilling.

[0044] Alternating layers of soft and hard formations: The formation consists of alternating soft and hard sections. This unpredictable formation characteristic requires drilling rigs to have greater adaptability and adjustment capabilities to ensure continuous and effective drilling.

[0045] Frozen soil: In cold regions, there may be frozen soil layers underground. These layers are extremely hard and have extremely low temperatures, which places higher demands on the ice-breaking capabilities of drilling equipment.

[0046] Gravel-bearing layers: In addition to pebble layers, you may also encounter strata containing gravel of varying sizes, which increases the drilling resistance.

[0047] Specifically, a drilling pressurization device for a drilling machine includes a container fixed to a power head 1. The container has an inlet and an outlet. Material can be fed into the container through the inlet, increasing the overall weight of the container. This gravity can be used to increase the downward pressure of the drill rod 2, allowing it to pass through complex geological layers. Under normal circumstances, the material in the container can be discharged through the outlet, reducing the overall weight of the container and the downward pressure of the drill rod 2. This reduces wear on the power head 1 and the drill rod 2, and also reduces energy loss when lifting the drill rod 2. Furthermore, since the feeding amount can be freely controlled, it can be selected according to the actual downward pressure requirements.

[0048] In this embodiment, the water tank 3 is fixed to the bottom of the power head 1, and the upper end of the drill rod 2 can pass through the water tank 3 and connect to the power head 1. Only by setting the water tank 3 at the bottom of the power head 1 can the force on the power head 1 be guaranteed to be vertically downward, avoiding tilting due to force. At the same time, since the water tank 3 is used, it is only necessary to introduce or discharge water into the water tank 3. Of course, other tanks can also be used, such as introducing mud or hydraulic oil into the tank.

[0049] In this embodiment, when the inlet and outlet are arranged alternately on the top or side of the water tank 3, a water inlet pipe 4 and a water outlet pipe 5 are also included for water injection and drainage. One end of the water inlet pipe 4 can be inserted into the water pipe through the inlet, that is, water can be injected through the water inlet pipe 4. One end of the water outlet pipe 5 can be inserted into the water tank 3 through the outlet, and water can be drained through the water outlet pipe 5. In order to provide power for drainage, a water pump 6 is also included. The water pump 6 is installed in the water tank 3 and is connected to the water outlet pipe 5. It can draw water from the water tank 3 and discharge it through the water outlet pipe 5.

[0050] In another scenario, where the outlet is located at the bottom of the water tank and the inlet is located at the top, only one water inlet pipe needs to be installed. One end of the water inlet pipe can extend into the water tank through the inlet, and the water can be drained directly through the outlet. In order to control whether the outlet is closed, a switch is also included. This switch is located inside the outlet and is used to control whether the outlet is opened or closed. The switch can control whether to drain water, thereby controlling the amount of water in the tank.

[0051] For the installation of drill rod 2, mounting holes 7 are provided on the top and bottom of water tank 3. The upper end of drill rod 2 can pass through the two mounting holes 7 and connect to power head 1.

[0052] To ensure that the force provided by the water tank 3 does not cause the power head 1 to be subject to lateral force, the width of the water tank 3 is the same as the width of the bottom of the power head 1, the length of the water tank 3 is the same as the length of the bottom of the power head 1, and the top of the water tank 3 is exactly in contact with the bottom of the power head 1 to avoid the power head 1 being subjected to lateral force.

[0053] In summary, the drilling machine in this embodiment can be specifically applied to pile foundation construction in urban infrastructure, underwater pile foundation construction in bridge construction, preliminary geological exploration of mountain highway tunnels, soft soil foundation treatment in port and wharf expansion, and drilling platforms in desert areas.

[0054] In urban infrastructure construction projects, such as the foundation engineering of subway stations or high-rise buildings, a large amount of pile foundation construction is usually required. These locations are often in the city center, and the underground may contain various complex strata, such as hard interlayers and sand layers. Using the drilling pressurization device of this utility model, water can be injected into the water tank to increase the downward pressure on the drill rod, thereby improving drilling efficiency and ensuring smooth drilling even in hard strata. After drilling is completed, water is drained to reduce weight, making it easier to pull out the drill rod and reducing the impact on the surrounding environment.

[0055] When constructing bridges over rivers, underwater pile foundation construction is a crucial task. The difficulty lies in the fluidity of the river water and the changing riverbed composition. This invention's drilling machine can adapt to varying water depths and handle different soil hardness levels by adjusting the water volume in the tank, ensuring stability and accuracy during drilling. Furthermore, using water as the pressurization medium is more environmentally friendly and aligns with modern green engineering standards.

[0056] Before constructing highway tunnels in mountainous areas, detailed geological surveys must be conducted to determine the optimal route and design. This process may encounter geological challenges such as permafrost and gravel layers. Traditional drilling equipment struggles to operate effectively in such harsh environments. However, the pressurization device provided in this invention allows for flexible adjustment of drilling force according to actual needs, ensuring the continuity and accuracy of drilling operations. Simultaneously, this design helps protect the expensive power head assembly from excessive wear, reducing maintenance costs.

[0057] For port and wharf expansion projects in coastal areas or near river estuaries, soft soil foundations are a common problem. Soft soil foundations are prone to collapse, posing significant challenges to drilling. The drilling machine of this invention allows for increased water volume in the tank to enhance drilling force when encountering soft soil foundations; conversely, when drilling into harder strata, the water volume can be reduced to avoid unnecessary energy consumption. This method not only improves work efficiency but also helps maintain the equipment in good condition.

[0058] Oil drilling in desert environments often faces instability caused by shifting sand dunes and technical challenges posed by deep rock formations. This invention's drilling rig and pressurization device maintain excellent performance under such extreme conditions. By precisely controlling the water volume within the container, it adapts to varying geological characteristics, ensuring safe and efficient drilling operations. Furthermore, the use of liquid as the pressurization medium is more environmentally friendly than traditional methods, reducing disruption to the local ecosystem.

[0059] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0060] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0061] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A drilling pressurization device for a drilling machine, the drilling machine comprising a power head and a drill rod, the upper end of the drill rod being connected to the power head, the power head being used to drive the drill rod to rotate, characterized in that, The pressurizing device includes a container fixed to the power head, and the container has an inlet and an outlet. Material can be supplied into the container through the inlet to increase the downward pressure of the drill rod, and material can be discharged through the outlet to reduce the downward pressure of the drill rod.

2. The drilling pressurization device for a drilling machine according to claim 1, characterized in that, The container is a water tank, which is fixed to the bottom of the power head. The upper end of the drill rod can pass through the water tank and connect to the power head.

3. The drilling pressurization device for a drilling machine according to claim 2, characterized in that, It also includes a water inlet pipe and a drain pipe. One end of the water inlet pipe can extend into the water tank through the inlet, and one end of the drain pipe can extend into the water tank through the outlet.

4. The drilling pressurization device for a drilling machine according to claim 3, characterized in that, It also includes a water pump, which is installed inside the water tank and connected to the drain pipe.

5. The drilling pressurization device for a drilling machine according to claim 3, characterized in that, The inlet and the outlet are arranged at intervals on the top or side of the water tank.

6. The drilling pressurization device for a drilling machine according to claim 2, characterized in that, It also includes a water injection pipe, with the inlet located at the top of the water tank and the outlet located at the bottom of the water tank. One end of the water injection pipe can extend into the water tank through the inlet.

7. The drilling pressurization device for a drilling machine according to claim 6, characterized in that, It also includes a switch located within the outlet and used to control the outlet to open or close.

8. The drilling pressurization device for a drilling machine according to claim 2, characterized in that, The water tank has mounting holes at both the top and bottom, and the upper end of the drill rod can pass through the two mounting holes to connect with the power head.

9. A drilling pressurization device for a drilling machine according to claim 2, characterized in that, The width of the water tank is the same as the width of the bottom of the power head, and the length of the water tank is the same as the length of the bottom of the power head.

10. A drilling machine, characterized in that, include: mast; The power head is mounted on the mast in a height-adjustable manner; The drill pipe, the upper end of which is connected to the power head; The pressurizing device as described in any one of claims 1-9, wherein the pressurizing device is fixed to the power head and is used to increase the downward pressure of the drill pipe.

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