Drill bit device of pebble bed geological pile driver

Abstract

The drill bit device of the pebble bed geological pile driver comprises a drill bit rod body, and spiral blades are arranged on the peripheral side of the drill bit rod body; guide teeth are arranged at the drilling end of the drill bit rod body, a plurality of cutting drill bits are arranged at the drilling end of the spiral blade, and the cutting drill bits are sequentially arranged in the width direction of the spiral blade. The guide teeth are double-separate-head combined guide teeth, and the cutting drill bit is obliquely arranged; in the drilling direction, the height of the guide teeth is larger than that of the cutting drill bit. The drilling difficulty of the pebble bed geological drilling machine is solved, the construction progress is accelerated, the damage of the drilling machine is reduced, and the energy consumption is reduced.

Description

Technical Field

[0001] This application relates to a drill bit device for pebble layer piling machine, belonging to the field of drill bit technology. Background Technology

[0002] In the field of pile foundation construction, gravel layers are a relatively common and complex geological condition. Gravel layers consist of gravel particles of varying sizes and uneven distribution, and are usually quite loose, posing a significant challenge to pile driver construction. Traditional long-auger drilling rigs often encounter difficulties drilling, low construction efficiency, or even failure to complete drilling operations smoothly in gravel layers due to the significant resistance and wear on the drill bit caused by the gravel particles. While rotary drilling rigs can adapt to the construction requirements of gravel layers, their high equipment cost and construction expenses make them uneconomical for some projects with limited budgets.

[0003] Therefore, there is an urgent need in the market for a device with good drilling performance and wear resistance that can effectively cope with pebble layer geology. Utility Model Content

[0004] According to one aspect of this application, a drill bit device for pebble layer piling machine is provided, which solves the drilling difficulty of pebble layer drilling machine, speeds up the construction progress, reduces drilling machine damage, and reduces energy consumption.

[0005] A drilling bit device for pebble layer geology, characterized in that it comprises:

[0006] The drill bit rod body has helical blades arranged around its periphery;

[0007] The drill bit rod body is provided with guide teeth at the drilling end, and the helical blade is provided with multiple cutting drill bits at the drilling end, with the multiple cutting drill bits arranged sequentially along the width direction of the helical blade;

[0008] The guide teeth are double-headed combined guide teeth, and the cutting drill bit is inclined.

[0009] Along the drilling direction, the height of the guide teeth exceeds the height of the cutting drill bit.

[0010] Furthermore, the guide tooth includes a first guide tooth and a second guide tooth, which are arranged at an angle.

[0011] Furthermore, along the direction away from the drill bit body, the inclination of the plurality of cutting drill bits gradually increases, forming an arc shape.

[0012] Furthermore, the inclination angle of the cutting drill bit is set to 50°-70°;

[0013] The spacing between adjacent cutting drill bits is 30mm-80mm.

[0014] Furthermore, the first guide tooth and the second guide tooth are titanium alloy guide teeth;

[0015] The cutting drill bit is a titanium alloy drill bit.

[0016] Furthermore, the cutting drill bit is a detachable drill bit.

[0017] The beneficial effects that this application can produce include:

[0018] The pebble layer piling machine drill bit device provided in this application can achieve efficient and stable drilling in pebble layer geological conditions. The central double-headed guide teeth provide an accurate drilling path for the cutting drill bit, reducing deviations and resistance during drilling. Simultaneously, the follow-up drilling of the cutting drill bit ensures the continuity and efficiency of the borehole; this not only improves drilling efficiency but also extends the service life of the drill bit and reduces construction costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a pebble layer piling machine drill bit device according to one embodiment of this application;

[0020] Figure 2 This is a front view of a pebble layer piling machine drill bit device according to one embodiment of this application;

[0021] Figure 3 This is a side view of a pebble layer piling machine drill bit device according to one embodiment of this application;

[0022] List of components and reference numerals: 1-Drill rod body; 2-Helical blade; 3-Guide tooth; 4-Cutting drill bit. Detailed Implementation

[0023] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0024] See Figure 1-3 A drilling bit device for pebble layer piling machines, characterized in that it comprises:

[0025] Drill bit body 1, with spiral blades 2 arranged around its periphery;

[0026] The drill bit rod 1 is provided with guide teeth 3 at the drilling end, and the spiral blade 2 is provided with multiple cutting drill bits 4 at the drilling end. The multiple cutting drill bits 4 are arranged sequentially along the width direction of the spiral blade 2.

[0027] The guide tooth 3 is a double-headed combined guide tooth, and the cutting drill bit 4 is inclined.

[0028] Along the drilling direction, the height of the guide tooth 3 exceeds the height of the cutting drill bit 4.

[0029] Specifically, the pebble layer geology is mainly composed of pebbles of varying sizes. These pebbles are unevenly distributed, and the pebble layer is usually loose, making it difficult to form a good borehole wall. These factors bring the following difficulties to piling machine construction: the pebble particles generate significant resistance and wear on the drill bit, resulting in slow drilling speed or even failure to drill. The loose pebble layer makes the borehole wall prone to collapse, posing a safety hazard to construction. Due to the difficulty of drilling and poor borehole wall stability, construction efficiency is low, increasing project costs. Therefore, in this application, the drill bit rod body is responsible for transmitting rotational power and propulsion force, possessing sufficient strength and rigidity to cope with various forces during drilling. The helical blades are located on the periphery of the drill bit rod body to cut and transport the drilled soil and rock cuttings, preventing blockage in the borehole and increasing the stability of the drill bit. The guide teeth are optimized into a double-headed combined guide tooth, located at the drilling end of the drill bit rod body. The central guide tooth drills first at the center of the bottom of the hole, forming a U-shape, providing an accurate drilling path for the subsequent cutting drill bit. The dual-head combination design enhances the stability and accuracy of guidance, making it particularly suitable for complex geological conditions such as pebble layers. The cutting bit is positioned at the drilling end of the auger blade 2 to further cut the soil and rock layers. After the central guide tooth forms a U-shape, the cutting bit follows, using its cutting ability to break and remove the soil and rock. The number and layout of the cutting bit 4 can be adjusted according to specific geological conditions and drilling requirements.

[0030] This application enables efficient and stable drilling in pebble layer geological conditions. The centrally located dual-head guide teeth provide an accurate drilling path for the cutting bit, reducing deviations and resistance during drilling. Simultaneously, the follow-up drilling of the cutting bit ensures the continuity and efficiency of the borehole. This not only improves drilling efficiency but also extends the lifespan of the drill bit and reduces construction costs.

[0031] The guide tooth 3 includes a first guide tooth and a second guide tooth, which are set at an angle.

[0032] Specifically, the first and second guide teeth are set at a certain angle, which helps to provide multi-directional guiding force to the drill bit during drilling, enabling it to drill more accurately along the predetermined path. This is particularly effective in complex geological conditions such as pebble layers, significantly reducing drilling deviation and improving drilling accuracy. The first and second guide teeth drill first at the center of the hole bottom, forming a U-shape. This provides a stable drilling foundation for the subsequent cutting drill bit, while also reducing resistance and vibration during drilling. The cutting drill bit follows the U-shape formed by the guide teeth, responsible for breaking up and removing soil and rock.

[0033] Along a direction away from the drill bit body 1, the inclination of the plurality of cutting drill bits 4 gradually increases, forming an arc shape.

[0034] Specifically, due to the design of the helix angle of the helical blades, the inclination of the cutting drill bit gradually increases along the direction away from the drill rod. This gradually increasing inclination matches the rotation trajectory of the helical blades, forming an arc-shaped arrangement of the cutting drill bit. This arc shape better adapts to changes in the formation, improving drilling stability and efficiency. Simultaneously, the synergistic effect between these elements enhances the overall performance of the drill bit assembly, making drilling operations in complex geological conditions such as pebble layers smoother and more efficient.

[0035] Furthermore, when multiple cutting drill bits are arranged in an arc shape, they form a synergistic system. During drilling, each cutting drill bit can fully utilize its cutting ability while supporting each other, making the entire drill bit assembly more stable.

[0036] The inclination of the cutting drill bit 4 is set to 50°-70°;

[0037] The spacing between adjacent cutting drill bits 4 is 30mm-80mm.

[0038] Specifically, the angle setting of the cutting bit ensures that it can effectively penetrate the formation during drilling, while avoiding excessive wear or deviation from the drilling trajectory caused by excessive angle. Simultaneously, the spacing between adjacent cutting bits ensures sufficient space to prevent mutual interference during drilling, and also guarantees the stability and balance of the entire drill bit assembly during the drilling process. Appropriate spacing can also optimize the discharge of cuttings and soil, reduce borehole blockage, and improve drilling efficiency.

[0039] Preferably, during on-site construction, the inclination angle of the cutting drill bit is set to 65°, which can better protect the drill teeth, reduce wear, and improve drilling capacity; the spacing between adjacent cutting drill bits is 50mm, which eliminates drilling blind spots between drill teeth, makes drilling continuous, and reduces drill tooth wear.

[0040] The first guide tooth and the second guide tooth are titanium alloy guide teeth;

[0041] The cutting drill bit 4 is a titanium alloy drill bit.

[0042] Specifically, titanium alloy drill bits possess characteristics such as high hardness, no cracks, high toughness, and wear resistance, which can improve the drilling efficiency of pile drivers and extend the service life of drill bits.

[0043] The cutting drill bit 4 is a detachable drill bit.

[0044] Specifically, detachable drill bits greatly improve the flexibility and adaptability of drill assemblies, helping to extend their service life. When a cutting drill bit wears out due to prolonged use or encountering hard formations, operators can easily replace it with a new one without replacing the entire drill assembly, reducing maintenance costs and resource waste. Furthermore, detachable cutting drill bits facilitate cleaning and maintenance. During drilling, dirt, sand, and other impurities may adhere to the surface of the cutting drill bit. By disassembling the drill bit, operators can more easily clean and maintain it, thus keeping the drill bit in good working condition.

[0045] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A cobble formation pile driver bit apparatus, characterized by, Include: Drill rod body (1), the drill rod body (1) is provided with helical blade (2) on the side; The drilling end of the drill rod body (1) is provided with a guide tooth (3), and the drilling end of the helical blade (2) is provided with a plurality of cutting bits (4), and the plurality of cutting bits (4) are sequentially arranged along the width direction of the helical blade (2); The guide tooth (3) is a double split head combined guide tooth, and the cutting bit (4) is inclinedly arranged; Along the drilling direction, the height of the guide tooth (3) protrudes the height of the cutting bit (4).

2. The cobblestone geopunch device of claim 1, wherein, The guide tooth (3) includes a first guide tooth and a second guide tooth, and the first guide tooth and the second guide tooth are arranged at an angle.

3. The cobblestone geopunch apparatus of claim 1, wherein, Along the direction away from the drill rod body (1), the inclination of the plurality of cutting bits (4) gradually increases, forming a circular arc shape.

4. The cobblestone geopunch apparatus of claim 1, wherein, The inclination of the cutting bit (4) is set to 50°-70°; The spacing between adjacent cutting bits (4) is 30mm-80mm.

5. The cobblestone geopunch apparatus of claim 2, wherein, The first guide tooth and the second guide tooth are titanium alloy guide teeth; The cutting bit (4) is a titanium alloy bit.

6. The cobblestone geopunch device of claim 1, wherein, The cutting bit (4) is a detachable bit.

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