Cylinder drill for rotary drilling rig

Abstract

The utility model discloses a barrel drill for a rotary drilling rig, which belongs to the technical field of rotary drilling rigs and comprises a barrel and a drilling body movably connected to the end of the barrel. A plurality of liquid outlet holes are formed in the side wall of the barrel body and aim at discharging redundant liquid in the barrel body, so that the weight of the barrel drill is reduced, a drill rod is protected, the storage space in the barrel body is increased, and therefore the single-time drilling operation depth is increased, a plurality of flow guide channels are additionally arranged on the outer wall of the barrel body, and the extending directions of the flow guide channels are parallel to the axis of the barrel body and located between the barrel body and the guide strips. The liquid discharged from the liquid outlet hole can be smoothly discharged, and dead angles are avoided. A baffle is slidably mounted in the barrel and connected to the end face in the barrel through a plurality of circumferentially-arranged elastic bodies. In the drilling process, liquid firstly enters the cylinder body and is reserved between the baffle and drilling materials, and when the baffle slides to the upper end of the liquid outlet hole under the action of the elastic body, the liquid is discharged from the liquid outlet hole under the action of increasing the pressure intensity.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to a barrel drill for a rotary drilling rig. Background Art

[0002] In fields such as civil engineering, infrastructure construction, and mineral exploration, rotary drilling rigs, as efficient and flexible drilling equipment, are widely used for drilling holes in various strata. One of their core components, the drill bit, is responsible for directly breaking the stratum, forming the borehole, and removing the drill cuttings. Traditional drill bit designs have limitations in handling complex strata, improving drilling efficiency, and reducing equipment wear. Therefore, optimizing and innovating the drill bit structure is key to improving the overall performance of rotary drilling rigs.

[0003] Traditional barrel drills have shortcomings in material discharge, equipment flexibility, and adaptability. Drilling efficiency is low, especially in hard formations, and they are prone to equipment wear, increasing maintenance costs.

[0004] Traditional barrel drills also have shortcomings in fluid management. If mud, water, and other fluids produced during drilling are not promptly drained, not only will this increase the weight of the barrel drill, affecting drilling efficiency, but it can also place unnecessary pressure on the drill rod, shortening its service life. Utility Model Content

[0005] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a barrel drill for a rotary drilling rig, which can achieve a smoother liquid discharge function.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a barrel drill for a rotary drilling rig, comprising a barrel and a drilling body, wherein the drilling body is a component installed at the end of the barrel, and the drilling body is movably connected to the barrel;

[0007] A spiral guide bar is installed on the outside of the cylinder;

[0008] A plurality of liquid outlet holes are provided on the side wall of the cylinder.

[0009] Preferably, a plurality of flow guides are provided on the outer wall of the cylinder, the extension direction of the flow guides is parallel to the axis of the cylinder, and the flow guides are arranged between the cylinder and the guide bars.

[0010] Preferably, a baffle is slidably installed inside the cylinder, and the baffle is connected to the inner end surface of the cylinder through an elastic body.

[0011] Preferably, the plurality of liquid outlet holes are respectively arranged at a plurality of height positions of the cylinder.

[0012] Preferably, the bottom of the drilling body is provided with annular teeth.

[0013] Preferably, there are multiple elastic bodies, and the multiple elastic bodies are arranged circumferentially.

[0014] Preferably, a support frame is provided in the middle of the drilling body, a drill tooth is mounted on the support frame, and a feed port adapted to the drill tooth is opened on the support frame.

[0015] Preferably, the tail end of the cylinder is fixedly connected to a drill rod, and the cylinder is connected to the rotary drilling rig through the drill rod.

[0016] Preferably, the outer surface of the guide bar is provided with a plurality of protrusions, and the protrusions are arranged along the spiral direction of the guide bar.

[0017] The beneficial effects of the present invention are:

[0018] The combined design of the liquid outlet and the baffle effectively discharges excess liquid inside the barrel, reduces the weight of the barrel drill, and protects the drill rod. The discharge of liquid increases the storage space inside the barrel and increases the depth that can be reached in a single drilling operation.

[0019] The setting of spiral guide bars and protrusions not only prevents wear of the barrel, but also improves the continuity of slag guidance and better guides out the drilling slag. The design of the guide channel avoids the formation of dead corners above the guide bars, ensuring the smooth discharge of the liquid. The design of the barrel takes wear and resistance issues into consideration. The setting of guide bars and protrusions reduces drilling resistance and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 This is an internal diagram of the cylinder of the present utility model.

[0022] Figure 3 This is a structural diagram of the end portion of the cylinder of the present utility model.

[0023] Figure 4 This is a connection diagram of the cylinder and the drilling body of the utility model.

[0024] In the figure: 1, cylinder, 2, flow guide, 3, guide bar, 4, liquid outlet, 5, drilling body, 6, drill rod, 7, elastic body, 8, baffle, 9, feed port, 10, drill teeth, 11, annular teeth. DETAILED DESCRIPTION

[0025] The present invention is described below with reference to specific embodiments, but is not intended to limit the present invention.

[0026] Example 1

[0027] like Figure 1-Figure 4As shown, in this embodiment, a barrel drill for a rotary drilling rig is provided, comprising a barrel 1 and a drilling body 5. The drilling body 5 is a component installed at the end of the barrel 1. The drilling body 5 is movably connected to the barrel 1, and the connection method between the drilling body 5 and the barrel 1 is a rotational connection mechanism. During the drilling operation, the drilling body 5 and the barrel 1 maintain a stable fixed connection state to ensure the stability of the drilling operation. Once the drilling operation is completed, the drilling body 5 can flexibly rotate around the preset axis on the barrel 1, thereby achieving smooth discharge of the material inside the barrel 1. It is worth noting that this rotational connection method between the drilling body 5 and the barrel 1 has been widely used in existing rotary drilling rig technology and exists as a standard component. Therefore, it is not the core innovation of this patent application. In view of this, this application will not elaborate or explain the details of this connection method in depth. The bottom of the drilling body 5 is provided with an annular tooth 11, which can crush harder materials.

[0028] A spiral guide bar 3 is mounted on the exterior of the barrel 1. This design plays a crucial role in the barrel drill's drilling operation. The unique spiral orientation of the guide bar 3 effectively creates greater friction with the hole being drilled. This friction helps improve the stability and efficiency of the barrel 1 during drilling, making the drilling process easier and smoother.

[0029] The sidewall of the barrel 1 is provided with a plurality of liquid outlet holes 4, the primary function of which is to drain excess liquid from the barrel 1. This design not only helps reduce the weight of the entire barrel drill, thereby effectively protecting the drill rod 6 of the rotary drilling rig, but also increases the storage space within the barrel 1 by draining the liquid. This increases the depth that can be achieved in a single drilling operation, thereby improving drilling efficiency. The plurality of liquid outlet holes 4 are respectively arranged at various height positions on the barrel 1. When the baffle 8 moves to the position corresponding to the liquid outlet hole 4, the liquid can be discharged from the corresponding liquid outlet hole 4.

[0030] Example 2

[0031] like Figure 1-Figure 4 As shown, based on the first embodiment, this embodiment provides the structure of the flow guide 2 and the baffle 8, which are as follows:

[0032] The outer wall of the cylinder 1 is provided with a plurality of flow guides 2. The extension direction of the flow guides 2 is parallel to the axis of the cylinder 1. The flow guides 2 are arranged between the cylinder 1 and the guide bar 3. The function of the flow guides 2 is to discharge the liquid discharged from the liquid outlet, so as to prevent the liquid from remaining above the guide bar 3 and forming a dead angle. Under this diversion, the liquid can be easily discharged. A baffle 8 is slidably installed inside the cylinder 1. The baffle 8 is connected to the inner end face of the cylinder 1 through an elastomer 7. When drilling, the liquid will first enter the cylinder 1 and remain between the baffle 8 and the material produced by the drilling. When the baffle 8 slides to the upper end of the liquid outlet 4, the liquid is pressurized by the elastomer 7, and the liquid will flow out from the liquid outlet 4 to the outside. There are multiple elastomers 7, and the multiple elastomers 7 are arranged circumferentially, so that the force on the baffle 8 is more uniform.

[0033] Example 3

[0034] like Figure 1-Figure 4 As shown, based on the first and second embodiments, this embodiment provides an installation method for the cylinder 1, which is as follows:

[0035] A support frame is provided in the middle of the drilling body 5 , on which drill teeth 10 are installed. The support frame is provided with a feed port 9 adapted to the drill teeth 10 , and the material produced by drilling will enter the interior of the cylinder 1 through the feed port 9 .

[0036] The tail end of the cylinder 1 is fixedly connected to a drill rod 6, and the cylinder 1 is connected to the rotary drilling rig through the drill rod 6. The drill rod 6 is connected to the driving component of the rotary drilling rig, and the cylinder 1 is driven to rotate by the drill rod 6. The driving mode of the drill rod 6 is the basic driving mode of the rotary drilling rig, so it is not specifically explained in this utility model.

[0037] The outer surface of the guide bar 3 is provided with several protrusions arranged along the spiral direction of the guide bar 3. The guide bar 3 and the external protrusions prevent wear and tear on the barrel 1, protecting it. They also effectively guide slag discharge, reducing drilling resistance. During drilling, the barrel drill uses a rotary feed mechanism. The barrel drill with a full guide bar 3 design provides greater continuity in slag guidance, effectively removing drill cuttings.

[0038] Working principle:

[0039] The drilling body 5 is installed at the end of the cylinder 1 through a stable rotating connection mechanism. During the drilling process, the drilling body 5 remains fixedly connected to the cylinder 1 to ensure the stability of drilling. The annular teeth 11 at the bottom of the drilling body 5 are used to crush harder materials to achieve effective drilling operations. A plurality of liquid outlet holes 4 are provided on the side wall of the cylinder 1 for discharging excess liquid inside the cylinder 1.

[0040] During the drilling process, the liquid first enters the interior of the cylinder 1 and remains between the baffle 8 and the drilling material.

[0041] When the baffle 8 slides to the upper end of the liquid outlet 4 under the action of the elastic body 7, the liquid is discharged from the liquid outlet 4 under the action of the increased pressure, and the material produced by drilling enters the interior of the cylinder 1 through the support frame and the feed port 9 on the drilling body 5. The spiral guide bar 3 and the protrusion design on the outer wall of the cylinder 1 help to guide the material and slag, reduce the drilling resistance, and the setting of the guide channel 2 ensures that the liquid discharged from the liquid outlet 4 can be discharged smoothly to avoid the formation of dead corners.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A barrel drill for a rotary drilling rig, comprising a barrel (1) and a drilling body (5), wherein the drilling body (5) is a component mounted on the end of the barrel (1), and the drilling body (5) is movably connected to the barrel (1), characterized in that ； A spiral guide bar (3) is installed on the outside of the cylinder (1); A plurality of liquid outlet holes (4) are provided on the side wall of the cylinder (1).

2. A barrel drill for a rotary drilling rig according to claim 1, characterized in that: A plurality of flow guides (2) are provided on the outer wall of the cylinder (1); the extension direction of the flow guides (2) is parallel to the axis of the cylinder (1); and the flow guides (2) are arranged between the cylinder (1) and the guide bar (3).

3. The barrel drill for rotary drilling rig according to claim 1, characterized in that: A baffle (8) is slidably mounted inside the cylinder (1), and the baffle (8) is connected to the inner end surface of the cylinder (1) via an elastic body (7).

4. The barrel drill for rotary drilling rig according to claim 3, characterized in that: The plurality of liquid outlet holes (4) are respectively arranged at a plurality of height positions of the cylinder (1).

5. The barrel drill for rotary drilling rig according to claim 1, characterized in that: The bottom of the drilling body (5) is provided with an annular tooth (11).

6. The barrel drill for rotary drilling rig according to claim 3, characterized in that: There are multiple elastic bodies (7), and the multiple elastic bodies (7) are arranged circumferentially.

7. The barrel drill for rotary drilling rig according to claim 1, characterized in that: A support frame is provided in the middle of the drilling body (5), a drill tooth (10) is mounted on the support frame, and an inlet (9) adapted to the drill tooth (10) is provided on the support frame.

8. The barrel drill for rotary drilling rig according to claim 1, characterized in that: The tail end of the cylinder (1) is fixedly connected to a drill rod (6), and the cylinder (1) is connected to a rotary drilling rig via the drill rod (6).

9. The barrel drill for rotary drilling rig according to claim 1, characterized in that: The outer surface of the guide bar (3) is provided with a plurality of protrusions, and the protrusions are arranged along the spiral direction of the guide bar (3).

Images