A drill rod which can be quickly attached and detached

Abstract

The utility model discloses a drill rod of quick assembly and disassembly, including the drill head, drill body, drill tail that link in turn, the one end of drill head and drill tail links is equipped with at least one buckle, and the drill tail is opened in and has the through -hole of adapting with drill head, and the through -hole is fixed with annular fixed block, and a plurality of disassembly column is fixedly connected with fixed block one end, and the adjacent disassembly column between is equipped with the convex that can with buckle joint, and the other end of fixed block is equipped with spring and can through spring and another drill head elasticity connects. In the utility model, through the buckle of drill head and the convex of drill tail cooperation, avoided the phenomenon of loosening, deflection that the original thread connection led to, after the buckle and the convex joint, through spring can to drill head and drill tail carry out self -locking, improved drill rod installation efficiency, when disassembling, buckle and the convex can complete disassembly in the state of separating the joint, realized the quick disassembly of drill rod.

Description

Technical Field

[0001] This utility model relates to the field of coal mine tunnel engineering technology, and more specifically to a drill rod that can be quickly loaded and unloaded. Background Technology

[0002] Controlling the stability of the surrounding rock in roadways is a crucial prerequisite for safe and efficient coal mine production. Currently, rock bolt support is the most widely used roadway support method. As the core equipment for roadway support, the efficiency of installing and dismantling the drill rods directly affects the support operation cycle time, equipment utilization rate, and worker safety.

[0003] Traditional drill rods use connecting sleeves and threaded connections, which have problems such as high installation accuracy requirements, time-consuming disassembly, and easy drill jamming failure. Especially in complex geological conditions and high ground stress mines, long-term operation exposure significantly increases the risk of roof collapse and mechanical injury. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to achieve rapid assembly and disassembly of the drill rod connection structure.

[0005] This utility model solves the above-mentioned technical problems through the following technical means: a quick-release drill rod, including a drill bit, a drill body, and a drill tail connected in sequence. The end of the drill bit connected to the drill tail is provided with at least one buckle. The drill tail is provided with a through hole adapted to the drill bit. An annular fixing block is fixed in the through hole. Multiple disassembly posts are fixedly connected to one end of the fixing block. Protrusions that can engage with the buckle are provided between adjacent disassembly posts. A spring is provided at the other end of the fixing block and can be elastically connected to another drill bit through the spring. Multiple equidistant limiting plates are fixedly connected to the fixing block. A limiting plate is fixedly connected to one side of each disassembly post. The top plane and bottom plane of the limiting plate are coplanar with the planes where the top and bottom planes of the disassembly posts are located, respectively.

[0006] As a preferred technical solution, the drill bit includes a first limiting block and a second limiting block that are fixedly connected. The first limiting block is provided with a protruding edge that can be connected to the end of the spring that is away from the fixed block.

[0007] As a preferred technical solution, multiple buckles are provided and are distributed at equal angles along the circumference of the first limiting block. One end of the first limiting block is connected to multiple buckles, and the other end is fixedly connected to the second limiting block.

[0008] As a preferred technical solution, the buckle is arranged in an inverted J shape, and the buckle includes a claw head and a claw body, with a guide surface on the claw head.

[0009] As a preferred technical solution, the limiting block one includes a cylindrical segment one and a hexagonal block segment one that are fixedly connected, and the limiting block two includes a cylindrical segment two and a hexagonal block segment two that are fixedly connected.

[0010] As a preferred technical solution, the disassembly column is an arc-shaped columnar structure, with an arc-shaped guide surface and a vertical surface at one end facing the inner through hole of the drill bit. The plane at the bottom of the guide surface is located above the plane at the top of the vertical surface.

[0011] As a preferred technical solution, the fixing block has multiple slots distributed at equal angles on one end facing the drill body.

[0012] As a preferred technical solution, the shank is provided with a limiting groove 1 that matches the limiting block 1 and a limiting groove 2 that matches the limiting block 2.

[0013] As a preferred technical solution, a disassembly cavity is also provided between the first limiting groove and the second limiting groove, and the diameters of the first limiting groove and the second limiting groove are larger than the diameter of the spring.

[0014] As a preferred technical solution, through holes are provided on the drill bit, drill body, and fixing block.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) In this utility model, the buckle of the drill bit and the protrusion of the drill tail cooperate to avoid the loosening and wobble caused by the original threaded connection. After the buckle and the protrusion are engaged, the spring can self-lock the drill bit and the drill tail, which improves the installation efficiency of the drill rod. When disassembling, the buckle and the protrusion can be disassembled to complete the disassembly, realizing the quick disassembly of the drill rod.

[0017] (2) In this utility model, by setting the first limiting block, the second limiting block, the first limiting groove, and the second limiting groove, the torsional resistance of the drill rod can be increased and the rotation of the drill rod during the drilling process can be restricted. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the drill bit structure provided in an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the tappet structure provided in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the drill bit provided in an embodiment of the present utility model;

[0022] Reference numerals: 1. Drill bit; 101. Snap-fit; 102. Limiting block one; 103. Limiting block two; 2. Drill body; 3. Drill tail; 301. Disassembly post; 302. Slot; 303. Locking spring; 304. Limiting groove one; 305. Annular fixing block; 306. Limiting groove two; 307. Protrusion; 308. Limiting plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] See Figure 1 , Figure 2 , Figure 4 A quick-release drill rod includes at least one drill rod. In this embodiment, two drill rods are used as an example. Each drill rod includes a drill bit 1, a drill body 2, and a drill tail 3 connected in sequence. The drill bit 1 of one drill rod can be detachably fixed to the drill tail 3 of the other drill rod. A buckle 101 is provided at the end of the drill bit 1. A through hole is provided in the drill tail 3. An annular fixing block 305 is fixedly connected in the drill tail 3. A disassembly post 301 is fixedly connected on the fixing block 305. A protrusion 307 is provided between adjacent disassembly posts 301. 07 is compatible with and can limit the position of buckle 101. A locking spring 303 is fixedly connected to the bottom of the fixing block 305. The other end of the locking spring 303 can abut against the protruding edge of the limiting block 102 on the tip 1 of another chisel. Multiple limiting plates 308 are fixedly connected to the fixing block 305 at equal angles. A limiting plate 308 is fixedly connected to one side of each disassembly post 301. The top plane of the limiting plate 308 is coplanar with the top plane of the disassembly post 301, and the bottom plane is coplanar with the bottom plane of the disassembly post 301.

[0025] See Figure 1The drill bit 1 includes a latch 101, a first limiting block 102, and a second limiting block 103. The first limiting block 102 and the second limiting block 103 have the same structure. One end of the first limiting block 102 is fixedly connected to multiple latches 101, and the other end is fixedly connected to the second limiting block 103. The first limiting block 102 includes a first cylindrical segment and a first hexagonal segment that are fixedly connected. The top of the first cylindrical segment has a protruding edge. The top of the first cylindrical segment is fixedly connected to multiple latches 101. In this embodiment, eight latches 101 are used as an example. Along the circumference of the limiting block 102, the buckle 101 is arranged in an inverted J-shape. The buckle 101 includes a claw head and a claw body. The claw body is tough and has a certain degree of elasticity, and can be bent and deformed. The buckle 101 is a steel structure. The hexagonal block segment 1 is used to abut against the locking spring 303. The hexagonal block segment 1 forms the protruding edge of the limiting block 102. The limiting block 2 103 includes the fixedly connected cylindrical segment 2 and hexagonal block segment 2. Of course, the limiting block 102 and the limiting block 2 103 can also be an integrally formed structure.

[0026] See Figure 3 , Figure 4 The fixing block 305 divides the shank 3 into an upper region and a lower region. The number of disassembly posts 301 fixed to the top of the shank 3 matches the number of latches 101. In this embodiment, eight disassembly posts 301 are provided. Each disassembly post 301 has an arc-shaped columnar structure. One end of the post facing the through hole of the shank 3 has an arc-shaped guide surface and a vertical surface. The bottom plane of the guide surface is above the top plane of the vertical surface. The connection between the guide surface and the vertical surface is a smooth transition, which facilitates the claw of the latch 101 to disengage from the upper region to the lower region. At the same time, the fixing block 305 also has a slot 302. The radius of the slot 302 is greater than the distance between the protrusion 307 and the center of the fixing block 305. In this embodiment, eight protrusions 307 are provided. All of them are located between adjacent disassembly posts 301. The slot 302 is used to improve the clamping effect of the claw head. The shank 3 is also provided with a limiting slot 1 304 and a limiting slot 2 306 along the axial direction. The limiting slot 1 304 is adapted to the hexagonal block segment 1 of the limiting block 102, and the limiting slot 2 306 is adapted to the hexagonal block segment 2 of the limiting block 2 103. The hexagonal block segment 1 and the hexagonal block segment 2 have the same structure, so the limiting block 102 can be inserted into the limiting slot 2 306, thereby restricting the rotation of the drill bit 1 relative to the shank 3. The fixing block 305 is used to prevent the shank 3 from moving radially relative to the drill bit 1. A disassembly cavity is also provided between the limiting slot 1 304 and the limiting slot 2 306. The space provided by the disassembly cavity allows the hexagonal segment 1 of the limiting block 102 to rotate.

[0027] It should be noted that the drill bit 1, drill body 2, drill tail 3, and fixing block 305 are all equipped with through holes, which can meet the water supply requirements and anti-torsion performance, avoiding the loosening and wobble caused by traditional threaded connections. Through the snap-fit ​​101 of the drill bit 1 and the protrusion 307 and groove 302 of the drill tail 3, the loading and unloading speed of the drill rod is greatly improved, effectively shortening the support operation time window, reducing the frequency of workers contacting the dangerous area of ​​the roof, and optimizing energy consumption by reducing the idle running time of the equipment. It can achieve ultra-fast installation of the drill rod in 3-5 seconds and rapid disassembly in 5-10 seconds, increasing the daily support efficiency of a single drilling rig by more than 20%.

[0028] How to use:

[0029] Drill rod installation:

[0030] Connect the drill bit 1 to the drill tail 3. The specific operating steps are as follows: Align the drill bit 1 and the drill tail 3 axially, then move the drill bit 1 axially. The latch 101 passes through the second limiting groove 306, the disassembly cavity, and the first limiting groove 304 in sequence to reach the bottom of the locking spring 303, and continues to move axially. Since the outer diameter of the claw of the latch 101 is larger than the inner diameter of the locking spring 303, the claw body of the latch 101 bends under the action of the arc surface of the claw, ensuring that the claw head and claw body of the latch 101 can enter the interior of the locking spring 303. When the claw head of the latch 101 passes through the fixing block 30 When the top is on the plane, it can be directly engaged with the protrusion 307 and the slot 302. After the claw head is connected to the slot 302, the axial displacement stops. At this time, the claw body of the buckle 101 is located inside the locking spring 303. The hexagonal block segment 1 of the limiting block 102 is located in the limiting groove 2 306, the cylindrical segment 1 is located in the disassembly cavity, and the entire limiting block 2 103 is located outside the limiting groove 2 306. The locking spring 303 is compressed, which fixes the claw head of the buckle 101 in the slot 302. The top plane of the hexagonal segment 1 of the bottom limiting block 102 of the locking spring 303 abuts against each other.

[0031] After the drill rod is connected to the drilling rig, it will undergo axial displacement and rotation during use. After being inserted into the borehole, due to the force generated by the drilling rig along the axial direction of the drill rod, the cylindrical section of the limiting block 102 will continue to move axially, which will cause the spring to be in a compressed state, and the latch 101 will disengage from the slot 302. At this time, disassembling the column 301 can prevent the latch 101 of the drill bit 1 from rotating counterclockwise, and the limiting plate 308 will restrict the latch 101 from rotating clockwise. In this state, the hexagonal section of the limiting block 203 enters the limiting groove 206, restricting the relative rotation between the drill bit 1 and the drill tail 3.

[0032] When the claw of the latch 101 passes through the plane where the top of the fixing block 305 is located, it may also be in the position of the vertical plane of the disassembly post 301. The latch 101 can continue to move axially along the vertical plane of the disassembly post 301 to above the arc surface of the disassembly post 301. The claw will rebound under the elastic action of the claw body and be located above the arc surface of the disassembly post 301. At this time, the chisel tip 1 can be rotated to make the latch 101 snap into the slot 302.

[0033] Drill rod disassembly:

[0034] Continue to move the drill bit 1 axially, compressing the locking spring 303. At this time, the first limiting block 102 is located in the through hole, and the second limiting block 103 is located in the disassembly cavity. The claw of the buckle 101 is no longer connected to the slot 302. Rotate the drill rod to rotate the drill bit 1 so that the claw of the buckle 101 contacts the arc surface of the disassembly column 301. Then move axially in the opposite direction, the claw of the buckle 101 bends, and the claw of the buckle 101 returns to the inside of the locking spring 303 along the arc of the disassembly column 301. The buckle 101 passes through the first limiting slot 304, the disassembly cavity and the second limiting slot 306 and exits the drill tail 3.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick-release drill rod, characterized in that, The device includes a drill bit, a drill body, and a drill tail connected in sequence. The end of the drill bit connected to the drill tail is provided with at least one buckle. The drill tail has a through hole adapted to the drill bit. An annular fixing block is fixed in the through hole. Multiple disassembly pins are fixedly connected to one end of the fixing block. There are protrusions between adjacent disassembly pins that can engage with the buckle. The other end of the fixing block is provided with a spring and can be elastically connected to another drill bit through the spring. Multiple equidistant limiting plates are fixedly connected to the fixing block. Each disassembly pin has a limiting plate fixedly connected to one side. The top plane and bottom plane of the limiting plate are coplanar with the top plane and bottom plane of the disassembly pin, respectively.

2. The quick-release drill rod according to claim 1, characterized in that, The drill bit includes a first limiting block and a second limiting block that are fixedly connected. The first limiting block has a protruding edge that can be connected to the end of the spring that is away from the fixed block.

3. The quick-release drill rod according to claim 2, characterized in that, Multiple buckles are provided and are distributed at equal angles along the circumference of the first limiting block. One end of the first limiting block is connected to multiple buckles, and the other end is fixedly connected to the second limiting block.

4. The quick-release drill rod according to claim 1, characterized in that, The buckle is designed in an inverted J shape.

5. A quick-release drill rod according to claim 2, characterized in that, Limiting block one includes a fixedly connected cylindrical segment one and a hexagonal block segment one, and limiting block two includes a fixedly connected cylindrical segment two and a hexagonal block segment two.

6. A quick-release drill rod according to claim 1, characterized in that, The disassembly column is an arc-shaped columnar structure. One end of it facing the inner through hole of the drill bit has an arc-shaped guide surface and a vertical surface. The plane at the bottom of the guide surface is above the plane at the top of the vertical surface.

7. A quick-release drill rod according to claim 1, characterized in that, The fixing block has multiple slots distributed at equal angles on one end facing the drill body.

8. A quick-release drill rod according to claim 1, characterized in that, The shank has a first limiting groove that matches the first limiting block and a second limiting groove that matches the second limiting block.

9. A quick-release drill rod according to claim 8, characterized in that, A disassembly cavity is also provided between the first limiting groove and the second limiting groove. The diameters of the first limiting groove and the second limiting groove are larger than the diameter of the spring.

10. A quick-release drill rod according to claim 1, characterized in that, Through holes are provided on the drill bit, drill body, and fixing block.

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