A drill pipe device suitable for handling an underground anchor cable

Abstract

The present application relates to anchor cable construction technology field, especially a kind of drill rod device suitable for processing underground anchor cable, including stem and drill bit, the drill bit is connected at the bottom end of the stem, the tip side of the drill bit is connected with several short rods, the short rod is evenly arranged along the drill bit tip side outer ring circumference, the short rod is also connected at the drill bit tip tip, compared with prior art, replace impact drill bit with short rod drill bit, underground anchor cable can be wound and broken, reduce the time of using impact drill to break underground anchor cable, reduce the breaking difficulty of underground anchor cable, improve work efficiency, save time;Compared with artificial pile construction, use mechanical cooperation, reduce the labor intensity of workers, improve work efficiency;This scheme reduces personnel allocation, saves expenditure for enterprise, construction efficiency is high, construction period is short, building settlement is small, construction is flexible, significant economic and social benefits are obtained, and the application prospect is wide.

Description

Technical Field

[0001] This invention relates to the field of anchor cable construction technology, and in particular to a drill rod device and construction method suitable for handling underground anchor cables. Background Technology

[0002] With the rapid pace of urbanization, it is often necessary to construct new buildings next to existing ones. Existing buildings often use underground anchor cables for slope support during underground construction. These anchor cables are components used to support and reinforce underground structures, preventing soil loosening, slippage, and deformation. After construction, the original anchor cables remain permanently. When constructing new buildings nearby, diaphragm walls need to be built underground as water-cutting, seepage-proof, load-bearing, and water-retaining structures. During the construction of diaphragm walls, if the location of the anchor cables conflicts with the location of the diaphragm wall, or if the size or type of the anchor cables does not meet design requirements, the anchor cables need to be cut.

[0003] Existing methods for cutting underground anchor cables include: 1. Using an impact drill to repeatedly strike the anchor cable to break it. However, this method is difficult to break due to the good elasticity of underground anchor cables, and the large number of anchor cables remaining in the soil after breaking can affect subsequent construction; 2. Using manually excavated bored piles to dig to the anchor cable location and then performing gas cutting. This method is extremely inefficient and costly; 3. Using a clamping device to hold the anchor cable and then cutting it with a diamond wire saw. This method has a long equipment setup time and requires a lot of preparation work, resulting in low efficiency. Furthermore, existing cutting methods can cause deformation of underground anchor cables in untreated sections, which can affect construction safety to some extent. Therefore, a safe, simple, lightweight, time-saving, and labor-saving underground anchor cable cutting device and construction method are needed to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that existing underground anchor cable cutting methods are ineffective and inefficient, resulting in time-consuming and labor-intensive cutting of underground anchor cables and affecting work hours. This invention provides a drill rod device and construction method suitable for processing underground anchor cables.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A drill rod device suitable for processing underground anchor cables includes a rod body and a drill bit. The drill bit is connected to the bottom end of the rod body, and a plurality of first short rods are connected to the tip side of the drill bit. The first short rods are evenly arranged along the outer circumference of the drill bit tip side, and a second short rod is also connected to the tip of the drill bit. This solution includes a rod body and a drill bit. The drill bit is connected to the bottom end of the rod body and is used for rotary excavation of soil and breaking of anchor cables. Several first short rods are connected to the tip of the drill bit. The first short rods are evenly arranged around the outer circumference of the drill bit tip. Second short rods are connected to the tip of the drill bit, that is, the second short rod is connected at the center of the drill bit tip. The first short rods are connected to the outer circumference of the drill bit tip. Since the drill bit rotates, the linear velocity of the outer circumference is greater than that of the center. The second short rods are used to limit and bend the underground anchor cables during drilling. The short rods at the outer circumference are used to limit and pull the underground anchor cables during drilling. The second and first short rods work together to break the underground anchor cables. During the breaking process, the underground anchor cables will also wrap around the drill bit and drill rod under the action of rotation and the action of the second and first short rods, which facilitates the removal of part of the underground anchor cables from the underground anchor cable trench area, reducing the amount of work required to remove the remaining underground anchor cables and improving work efficiency.

[0007] Compared with existing technologies, this proposed drilling device for handling underground anchor cables uses a drill bit with a short rod instead of an impact drill bit. This allows for the pulling and breaking of underground anchor cables by wrapping them, reducing the time required for repeated impacts with an impact drill, lowering the difficulty of breaking the anchor cables, improving work efficiency, and saving time. Compared with manual pile excavation, the use of machinery reduces the labor intensity of workers and improves work efficiency. Compared with the method of lowering clamps to hold the anchor cables and then cutting them with a diamond wire saw, this method uses only one device to operate on underground anchor cables. The preparation work is less than that of the clamping method, the device placement time is shorter, and work efficiency is also improved. This solution reduces personnel requirements, saves costs for enterprises, has high construction efficiency, short construction period, small building settlement, and flexible construction, achieving significant economic and social benefits and has broad prospects for promotion and application.

[0008] As a preferred embodiment of the present invention, the tip of the drill bit is connected to a plurality of protrusions, each protrusion having a high end and a low end, the high ends of the protrusions abutting against each other, the high ends of the plurality of protrusions being located at the tip of the drill bit, the low ends and high ends of the protrusions being opposite ends, and the transition from the high end to the low end of the protrusions being continuous.

[0009] This solution recommends connecting several protrusions to the tip of the drill bit. Each protrusion includes a high end and a low end, with the high ends of the protrusions abutting each other. The high ends of the protrusions are located at the tip of the drill bit, and the low and high ends of the protrusions are opposite each other. The transition from the high end to the low end of the protrusions is continuous. Using the high ends of the protrusions to replace the tip of the drill bit, the high protrusion design at the tip allows the core part of the drill bit to have higher cutting force, enabling it to break rocks faster. The protrusions with a height that decreases with the slope of the tip can guide the cutting edge to cut smoothly, reducing the fluctuation of cutting force and further improving cutting efficiency. The design of a high tip and a low edge makes the drill bit more stable during drilling.

[0010] The protrusions in the core section can support the center of gravity of the drill bit, making it less prone to shaking during drilling and improving the accuracy and consistency of drilling. The continuous protrusion design with the high end transitioning to the low end helps guide rock cuttings out of the hole along the edge of the drill bit.

[0011] This chip removal path reduces the accumulation of rock cuttings in the hole, decreases drill bit wear and construction difficulty, and improves drilling efficiency. By optimizing cutting efficiency, increasing drill bit stability, and improving chip removal, the overall service life of the drill bit is extended. This design also reduces the frequency of drill bit replacements and improves construction efficiency.

[0012] In a preferred embodiment of the present invention, the width of the high end of the protrusion is smaller than the width of the low end. This embodiment recommends that the width of the high end of the protrusion be smaller than the width of the low end. The high end of the protrusion replaces the original drill bit tip. The smaller width of the protrusion reduces the contact area between the protrusion and the ground, increasing the pressure at the excavation point and making it easier to excavate the soil. The wider low end provides more material and structural support for the protrusion, making it more robust and durable. This helps improve the impact resistance and wear resistance of the drill bit, enabling it to better cope with complex geological conditions and hard rock formations that may be encountered during underground anchor cable treatment.

[0013] As a preferred embodiment of the present invention, the second short rod is connected to both the high end and the low end of the protrusion.

[0014] This solution recommends connecting the second short rod to both the high and low ends of the protrusion. The second short rod at the high end is used to limit and bend the underground anchor cable during drilling, while the second short rod at the low end is combined with the first short rod arranged on the outer ring. As a preferred embodiment of the invention, the angle between the connection surfaces of the first and second short rods is 80-90 degrees. The purpose of the first and second short rods in this solution is to grip the underground anchor cable and limit and pull it. If the angle between the connection surfaces of the first and second short rods is too large, the advantage is a large gripping range, but it is easy for the underground anchor cable to slip, making it impossible to limit the underground anchor cable. If the angle between the connection surfaces of the first and second short rods is too small, the advantage is a good limiting effect after gripping the underground anchor cable and no slippage, but the disadvantage is a small gripping range, and it is easy to fail to grip the underground anchor cable.

[0015] As a preferred embodiment of the present invention, the drill bit is divided into an inner ring and an outer ring. The outer ring includes an outer ring on the drill bit tip side and a first short rod evenly arranged along the circumference of the outer ring on the drill bit tip side. The inner ring includes the protrusion at the tip of the drill bit and a second short rod connected to the high and low ends of the protrusion. The inner ring and the outer ring are rotatably connected. The inner ring rotates with the rod body, and the outer ring is connected to a fixing member and does not rotate with the inner ring.

[0016] This solution recommends dividing the drill bit into an inner and outer ring. The outer ring includes an outer ring on the drill bit tip side and a first short rod evenly distributed along the circumference of the outer ring. The inner ring includes a protrusion at the tip of the drill bit and a second short rod connected to the high and low ends of the protrusion. After dividing the inner and outer rings, the inner ring rotates while the outer ring remains fixed, which makes it easier to break the underground anchor cable. After the device contacts the anchor cable, the second short rod of the inner ring limits the anchor cable and rotates continuously. The underground anchor cable will also be displaced with the rotation of the inner ring. Since the outer ring is connected to the outer sleeve of the rod body, the outer ring does not rotate with the inner ring. The underground anchor cable will be interfered with by the first short rod of the outer ring, restricting the displacement of the underground anchor cable, thus forming a shear force, changing the breakage position of the underground anchor cable, reducing the displacement of the underground anchor cable, weakening the impact on the existing underground anchor cables in the non-grooved area, and improving the safety of the project.

[0017] As a preferred embodiment of the present invention, the drill bit is divided into an inner ring and an outer ring. The outer ring includes an outer ring on the drill bit tip side and a first short rod evenly arranged along the circumference of the outer ring on the drill bit tip side. The inner ring includes the protrusion at the tip of the drill bit and a second short rod connected to the high end and low end of the protrusion. The inner ring and the outer ring are rotatably connected and rotate in opposite directions.

[0018] This solution recommends that the inner and outer rings rotate in opposite directions to further increase the shear force between them, making it easier and faster to snap the underground anchor cable and improve construction efficiency.

[0019] As a preferred embodiment of the present invention, the tip of the drill bit includes a plurality of chip removal grooves arranged along the slope of the tip.

[0020] This design recommends incorporating several chip removal grooves along the slope of the drill bit tip. These grooves effectively remove broken rock cuttings with the drilling mud, preventing their accumulation in front of the drill bit and improving its working conditions and efficiency. The presence of these grooves also reduces wear and tear on the drill bit, extending its lifespan. Furthermore, the grooves allow for smooth mud flow, preventing mud buildup in the borehole and reducing drilling difficulty. Finally, the grooves enable faster chip removal, reducing resistance during drilling and increasing drilling speed.

[0021] A construction method for trenching underground diaphragm walls includes the following steps: Step S1: Delineate the trenching area for the diaphragm wall and reinforce the trench walls on both sides; Step S2: After discovering underground anchor cables in the trenching area while clearing the soil, preliminarily determine the location of the underground anchor cables and stop trenching operations; Step S3: Determine the exact location and depth of the underground anchor cables; Step S4: Using a drill rod device suitable for handling underground anchor cables as described in any one of claims 1-8, drill down to contact the underground anchor cables, and break the underground anchor cables by rotating the drill rod device; Step S5: Pull the drill rod device out of the ground, bringing out the underground anchor cables; Step S6: Repeat steps S2-S5 until there are no underground anchor cables left in the trenching area, then resume trenching operations.

[0022] This solution addresses the problem of underground anchor cable breakage in non-grooving areas caused by existing technology when existing underground anchor cables intrude into the trenching area of ​​the diaphragm wall. By reinforcing the trench walls on both sides and changing the design of the inner and outer rings, this solution alters the breakage location of the underground anchor cables. It protects the safety of existing underground anchor cables and surrounding buildings while ensuring construction safety.

[0023] As a preferred embodiment of the present invention, step S5 further includes raising a drill rod device suitable for handling underground anchor cables to the ground, bringing out the underground anchor cables, and then using a grab bucket to clean up the remaining underground anchor cables in the soil.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. Compared with existing technologies, the drill rod device proposed in this solution for treating underground anchor cables uses a hinged pulling method instead of a cutting method, reducing construction steps and improving work efficiency. By replacing the impact drill bit with a drill bit with one featuring a short rod, the underground anchor cable can be broken by pulling it apart, reducing the time required for repeated impacts with an impact drill, lowering the difficulty of breaking the anchor cable, improving work efficiency, and saving time. Compared with manual pile excavation, the use of machinery reduces the labor intensity of workers and improves work efficiency. Compared with the method of lowering a clamp to hold the anchor cable and then cutting it with a diamond wire saw, only one device is used to operate on the underground anchor cable. Preparation work is less than with the clamping method, and the device placement time is shorter, further improving work efficiency. This solution reduces personnel requirements, saves costs for enterprises, has high construction efficiency, short construction period, minimal settlement of surrounding buildings, and flexible construction, achieving significant economic and social benefits and showing broad prospects for application.

[0025] 2. This solution addresses the problem of deformation of underground anchor cables in non-grooving areas caused by existing technology when existing underground anchor cables intrude into the trenching area of ​​the diaphragm wall. This is achieved by reinforcing the trench walls on both sides and changing the breakage location of the underground anchor cables through the design of the inner and outer rings. This protects the safety of the existing underground anchor cables and surrounding buildings, while ensuring the safety of construction. Attached Figure Description

[0026] Figure 1 This is a bottom view schematic diagram of a drill rod device for processing underground anchor cables according to the present invention; Figure 2 This is a front view schematic diagram of a drill rod device suitable for processing underground anchor cables according to the present invention; Figure 3 This is a schematic diagram of the structure of a drill rod device for handling underground anchor cables according to the present invention, showing the state of the underground anchor cable being broken. Icons: 1-rod body; 2-drill bit; 21-first short rod; 22-protrusion; 23-second short rod; 4-inner ring; 5-outer ring; 6-underground anchor cable. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0028] In the description of this invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and do not require that this invention must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0029] The terms “connected” and “linked” used in this invention should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; they can refer to direct connections or indirect connections through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0030] Example 1 like Figures 1 to 3 As shown, the drill rod device used in this embodiment for processing underground anchor cables includes a rod body 1 and a drill bit 2. The drill bit 2 is connected to the bottom end of the rod body 1. Several short rods are connected to the tip side of the drill bit 2. The first short rods 21 are evenly arranged around the outer circumference of the tip side of the drill bit 2. The tip of the drill bit 2 is connected to a second short rod 23.

[0031] Specifically, the drill bit 2 is divided into a tip side and a frustum side. The frustum side of the drill bit 2 is connected to the bottom end of the rod body 1. The rod body 1 can be connected to drilling equipment such as a drilling rig. The size of the drill bit 2 and the rod body 1 can be arbitrary, suitable for large rotary drilling rigs or small handheld drilling rigs; these are unrestricted. The tip side of the drill bit 2 is also connected to three protrusions 22. The protrusions 22 are set at the tip of the drill bit 2. The protrusions 22 include... The high and low ends of the protrusions 22 abut against each other, with the high ends of several protrusions 22 replacing the tip of the drill bit 2. The low and high ends of the protrusions 22 are opposite ends, and the transition from the high to the low end of the protrusions 22 is continuous. The width of the high end of the protrusions 22 is smaller than the width of the low end to improve the stability of the connection and force transmission. Simultaneously, a second short rod 23 is connected to both the high and low ends of the protrusions 22. The angle between the inclined surfaces of the first short rod 21 and the second short rod 23 is between 80° and 90°. Between 0° and 10°, the protrusion 22 also has an inclined surface in the direction of rotation. The soil-facing side of the inclined surface is low and the soil-repelling side is high. The design of the inclined surface allows the drill bit 2 to cut into the rock more smoothly when rotating, which helps to reduce the resistance during the cutting process and improve the cutting efficiency. The drill bit 2 is divided into an inner ring 4 and an outer ring 5. The outer ring 5 includes the outer ring on the tip side of the drill bit 2 and the first short rod 21 is evenly arranged along the circumference of the outer ring on the tip side of the drill bit. The inner ring 4 includes the protrusion at the tip of the drill bit and the second short rod 23 connected to the high and low ends of the protrusion. The inner ring 4 rotates with the rod body. The inner ring 4 and the outer ring 5 are rotatably connected. The outer ring 5 is connected to the fixing part. The outer ring 5 does not rotate with the inner ring 4. This can be achieved by using a non-rotating sleeve on the rod body 1, with the outer ring 5 connected to the sleeve, or by attaching a rod from the outside of the outer ring 5 to the fixing part of the drilling equipment, etc., so that the inner ring 4 rotates while the outer ring 5 does not rotate with the inner ring 4.

[0032] Example 2 The difference between Embodiment 2 and Embodiment 1 is that the inner ring 4 and the outer ring 5 rotate in opposite directions. The outer ring and the inner ring can be connected by a coaxial reverse rotation mechanical structure or by connecting a reverse motor to achieve the reverse rotation of the inner ring 4 and the outer ring 5.

[0033] Example 3 This embodiment provides a construction method for trenching in diaphragm walls, comprising the following steps. Step S1: Delineate the trenching area for the diaphragm wall, reinforce the trench walls on both sides to prevent the underground anchor cables 6 from detaching from the trench walls during processing and retrieval, and protect the existing structure from damage. Step S2: Upon discovering the underground anchor cables 6 while clearing the soil in the trenching area, preliminarily determine the location of the underground anchor cables 6 and stop trenching operations. Step S3: Use a plumb bob or magnet to determine the accurate location and depth of the underground anchor cables 6. Step S4: Use any of the drill rod devices suitable for handling underground anchor cables as described in Examples 1-2 to drill down and contact the underground anchor cables 6. Through the rotation of the drill rod device, the underground anchor cables 6 are broken by hinge. Step S5: Pull the drill rod device out of the ground, bringing out the underground anchor cables 6, and use a grab bucket to clean up any remaining underground anchor cables 6 in the soil. Step S6: Repeat steps S2-S5 until there are no more underground anchor cables 6 in the trenching area, then resume trenching operations.

[0034] This solution addresses the problem of underground anchor cable breakage in non-grooving areas caused by existing technology when existing underground anchor cables intrude into the trenching area of ​​the diaphragm wall. By reinforcing the trench walls on both sides and changing the design of the inner and outer rings, this solution alters the breakage location of the underground anchor cables. It protects the safety of existing underground anchor cables and surrounding buildings while ensuring construction safety.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drill rod device suitable for processing underground anchor cables, characterized in that, It includes a rod body (1) and a drill bit (2), the drill bit (2) being divided into a tip side and a frustum side, the frustum side of the drill bit (2) being connected to the bottom end of the rod body (1); The drill bit (2) is divided into an inner ring (4) and an outer ring (5). The inner ring (4) and the outer ring (5) are rotatably connected. The inner ring (4) rotates with the rod body (1). The outer ring (5) is connected to a fixing member. The outer ring (5) does not rotate with the inner ring (4). The outer ring (5) includes an outer ring on the tip side of the drill bit (2) and a first short rod (21) evenly arranged along the circumference of the outer ring on the tip side of the drill bit (2). The inner ring (4) includes a protrusion (22) at the tip of the drill bit (2) and a second short rod (23) connected to the high end and the low end of the protrusion (22). The high end and the low end of the protrusion (22) are both connected to the second short rod (23). The high ends of the protrusions (22) abut against each other, and the high ends of a plurality of the protrusions (22) are located at the tip of the drill bit (2). The low ends and high ends of the protrusions (22) are opposite ends. The transition from the high end to the low end of the protrusions (22) is continuous. The width of the high end of the protrusions (22) is smaller than the width of the low end.

2. A drill rod device suitable for processing underground anchor cables according to claim 1, characterized in that, The tip of the drill bit (2) includes several chip removal grooves arranged along the slope of the tip.

3. A construction method for trenching underground diaphragm walls, using a drill rod device as described in any one of claims 1-2, suitable for handling underground anchor cables, characterized in that... It includes the following steps: Step S1: Delineate the trenching area for the diaphragm wall and reinforce the trench walls on both sides; Step S2: When clearing the soil in the trenching area, the underground anchor cable (6) is found in the trenching area. The location of the underground anchor cable (6) is initially determined and the trenching operation is stopped. Step S3: Determine the exact location and depth of the underground anchor cable (6); Step S4: Pull the drill rod device suitable for processing underground anchor cables out of the ground and bring out the underground anchor cables (6). Step S5: Repeat steps S2-S4 until there are no underground anchor cables (6) in the trenching area, then resume trenching operations.

4. The construction method for trenching a diaphragm wall according to claim 3, characterized in that, Step S4 also includes using a grab bucket to clean up the remaining underground anchor cable (6) in the soil after a drill rod device suitable for handling underground anchor cables is brought out of the ground and the underground anchor cable (6) is taken out.

Images