Light well drilling rod

Abstract

The utility model relates to the field of water well drilling equipment, and discloses a light water well drilling rod which comprises a drill bit, a connecting mechanism is arranged at the upper end of the drill bit and comprises a connecting base fixedly connected to the upper surface of the drill bit, and a connector is fixedly connected to the middle of the upper surface of the connecting base. A limiting cavity is formed in the center of the interior of the connector. According to the utility model, the drill rod is stably connected with the connector and the drill bit through the synergistic effect of multiple components, on one hand, the first external thread is screwed with the second internal thread, and the fixing ring is tightly connected with the annular groove through the threads, so that secondary threaded connection is realized, and the connection strength is structurally enhanced; the elastic force of the reset spring enables the cross clamping block to tightly abut against the interior of the clamping sleeve, vibration in the drilling operation can be effectively resisted, loosening and shaking of the drill rod, the connector and the drill bit are prevented, the connection stability is guaranteed, and it is guaranteed that the drilling operation is safely and efficiently carried out.

Description

Technical Field

[0001] This utility model relates to the field of water well drilling equipment, and in particular to a lightweight water well drilling rod. Background Technology

[0002] In water well drilling operations, the drill rod is a crucial component, and its performance directly affects the efficiency and quality of the drilling work. The drill rod must not only withstand enormous axial pressure and torque, but also cope with complex geological conditions, such as hard rock layers, soft soil, and groundwater erosion. Therefore, the selection of materials, structural design, and manufacturing process of the drill rod must be strictly considered.

[0003] However, traditional drill bit and drill rod connection methods are often relatively simple, mostly using ordinary single-layer threaded connections or snap-fit ​​connections. During long-term, high-intensity drilling operations, the drill rod will be subjected to complex and powerful external forces, such as continuous vibration, severe torsion, and large axial tension. Ordinary single-layer threaded connections are prone to loosening due to vibration, causing the drill bit and drill rod to shake or even fall off.

[0004] Therefore, in order to solve the problems existing in the above-mentioned technology, those skilled in the art have proposed a lightweight water well drilling rod. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a lightweight water well drill rod. Through the coordinated action of multiple components, a stable connection is achieved between the drill rod, the connector, and the drill bit. Firstly, the engagement of the first external thread and the second internal thread, along with the tight connection between the fixing ring and the annular groove, creates a secondary threaded connection, structurally enhancing the connection strength. Secondly, the elasticity of the return spring ensures that the cross-shaped retaining block is firmly pressed against the inside of the retaining sleeve, effectively resisting vibrations during drilling operations and preventing loosening and shaking of the drill rod, connector, and drill bit. This ensures the stability of the connection and guarantees safe and efficient drilling operations.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A lightweight water well drilling rod includes a drill bit. The upper end of the drill bit is provided with a connecting mechanism. The connecting mechanism includes a connecting seat fixedly connected to the upper surface of the drill bit. A connecting head is fixedly connected to the middle of the upper surface of the connecting seat. A limiting cavity is formed in the center of the connecting head. A return spring is fixedly connected to the bottom of the limiting cavity. A limiting block is fixedly connected to the upper end of the return spring. The upper end of the limiting block extends to the upper part of the connecting head and is fixedly connected to a cross-shaped locking block. An annular groove is formed at the edge of the upper surface of the connecting head.

[0008] A drill rod is provided at the upper end of the connecting seat. A secondary fixing mechanism is provided at the inner top of the drill rod. The secondary fixing mechanism includes a one-way screw rotatably connected to the inner top of the drill rod. A one-way slider is sleeved on the body of the one-way screw. Multiple connecting frames are uniformly fixedly connected to the outer wall of the one-way slider. A fixing ring is fixedly connected to the lower end of the connecting frame. The fixing ring is sleeved inside the annular groove during downward movement. A retaining sleeve is fixedly connected to the lower surface of the one-way screw. The retaining sleeve engages with a cross-shaped retaining block.

[0009] Through the above technical solution, a stable connection between the drill rod, connector, and drill bit is achieved through the synergistic effect of multiple components. On the one hand, the engagement of the first external thread and the second internal thread, as well as the tight connection between the fixing ring and the annular groove through the threads, structurally enhance the connection strength. On the other hand, the elasticity of the return spring keeps the cross-shaped retaining block firmly pressed against the inside of the retaining sleeve, which can effectively resist the vibration and impact during drilling operations, prevent the drill rod, connector, and drill bit from loosening and shaking, ensure the stability of the connection, and ensure the safe and efficient conduct of drilling operations.

[0010] Furthermore, the limiting block slides up and down inside the limiting cavity;

[0011] The above technical solution allows the limiting cavity to make the limiting block more stable during the rotation of the cross block.

[0012] Furthermore, the inner wall of the lower end of the drill rod is provided with a second internal thread, and the outer wall of the lower end of the connector is provided with a first external thread, and the second internal thread and the first external thread cooperate with each other;

[0013] Through the above technical solution, the second internal thread and the first external thread are tightly engaged, which increases the friction between the drill rod and the connector, effectively resisting the action of external forces such as tension and torque that may occur during drilling operations, thereby enhancing the connection strength of the entire drill rod and ensuring the safety and stability of drilling operations.

[0014] Furthermore, the sidewall of the annular groove is provided with a first internal thread, and the outer wall of the fixing ring is provided with a second external thread, with the first internal thread and the second external thread engaging with each other.

[0015] Through the above technical solution, the second external thread and the first internal thread are tightly engaged, which can further enhance the connection strength of the entire drill rod.

[0016] Furthermore, a guide frame is fixedly connected to the top edge of the drill rod, the connecting frame slides up and down on the side wall of the guide frame, and the lower end of the one-way screw is rotatably connected to the inner wall of the lower end of the guide frame.

[0017] The above technical solution provides guidance for the connecting frame, ensuring that the fixing ring is accurately fitted into the annular groove, while stabilizing the rotation of the unidirectional screw, ensuring a smooth installation process, and improving the stability and installation efficiency of the drill rod connection.

[0018] Furthermore, the outer wall of the connector is provided with anti-slip texture.

[0019] Furthermore, the outer wall of the lower end of the drill rod is provided with multiple anti-slip particles.

[0020] Furthermore, the connecting seat is located at the lower end of the drill rod, and the connecting head is located inside the lower end of the drill rod.

[0021] This utility model has the following beneficial effects:

[0022] This utility model proposes a lightweight water well drilling rod that achieves a stable connection between the drill rod, the connector, and the drill bit through the synergistic action of multiple components. On one hand, the engagement of the first external thread and the second internal thread, as well as the tight connection between the fixing ring and the annular groove through the threads, realize a secondary threaded connection, which structurally enhances the connection strength. On the other hand, the elastic force of the return spring keeps the cross-shaped retaining block firmly pressed against the inside of the retaining sleeve, which can effectively resist the vibration during drilling operations, prevent the drill rod, connector, and drill bit from loosening and shaking, ensure the stability of the connection, and ensure the safe and efficient conduct of drilling operations. Attached Figure Description

[0023] Figure 1 This is an isometric view of a lightweight water well drilling rod proposed in this utility model;

[0024] Figure 2 This is a cross-sectional view of a lightweight water well drilling rod proposed in this utility model;

[0025] Figure 3 This is a cross-sectional view of the drill bit and connecting mechanism in a lightweight water well drilling rod proposed in this utility model;

[0026] Figure 4 This utility model provides a cross-sectional view of the drill rod and an isometric view of the one-way screw, one-way slider, connecting frame, and fixing ring in a lightweight water well drilling rod.

[0027] Figure 5 This invention relates to a cross-sectional view of the drill rod and an isometric view of the secondary fixing mechanism in a lightweight water well drill rod.

[0028] Figure 6 This is an isometric view of the secondary fixing mechanism in a lightweight water well drilling rod proposed in this utility model.

[0029] Legend:

[0030] 1. Drill pipe;

[0031] 2. Drill bit;

[0032] 3. Connecting mechanism; 301. Connecting seat; 302. Connecting head; 303. Limiting cavity; 304. Return spring; 305. Limiting block; 306. Cross-shaped retaining block; 307. Annular groove; 308. First internal thread; 309. First external thread; 310. Anti-slip texture;

[0033] 4. Secondary fixing mechanism; 401. One-way screw; 402. One-way slider; 403. Connecting frame; 404. Fixing ring; 405. Second external thread; 406. Guide frame; 407. Sleeve; 408. Second internal thread; 409. Anti-slip particles. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 1 , Figure 2 and Figure 3 One embodiment provided by this utility model:

[0036] A lightweight water well drilling rod includes a drill bit 2. A connecting mechanism 3 is provided at the upper end of the drill bit 2. The connecting mechanism 3 includes a connecting seat 301 fixedly connected to the upper surface of the drill bit 2. A connecting head 302 is fixedly connected to the middle of the upper surface of the connecting seat 301. A limiting cavity 303 is formed at the center of the connecting head 302. A return spring 304 is fixedly connected to the bottom of the limiting cavity 303. A limiting block 305 is fixedly connected to the upper end of the return spring 304. The upper end of the limiting block 305 extends to the upper part of the connecting head 302 and is fixedly connected to a cross-shaped locking block 306. An annular groove 307 is formed at the edge of the upper surface of the connecting head 302. The limiting block 305 slides up and down inside the limiting cavity 303. The limiting cavity 303 makes the limiting block 305 more stable when driving the cross-shaped locking block 306 to rotate.

[0037] Reference Figure 2 , Figure 4 , Figure 5 and Figure 6A drill rod 1 is provided at the upper end of the connecting seat 301. A secondary fixing mechanism 4 is provided at the inner top of the drill rod 1. The secondary fixing mechanism 4 includes a one-way screw 401 rotatably connected to the inner top of the drill rod 1. A one-way slider 402 is sleeved on the body of the one-way screw 401. Multiple connecting frames 403 are uniformly fixedly connected to the outer wall of the one-way slider 402. A fixing ring 404 is fixedly connected to the lower end of the connecting frame 403. The fixing ring 404 is sleeved inside the annular groove 307 during downward movement. The lower surface of the one-way screw 401 A retaining sleeve 407 is fixedly connected, and the retaining sleeve 407 engages with the cross-shaped retaining block 306. A second internal thread 408 is formed on the inner wall of the lower end of the drill pipe 1, and a first external thread 309 is formed on the outer wall of the lower end of the connector 302. The second internal thread 408 and the first external thread 309 engage tightly, increasing the friction between the drill pipe 1 and the connector 302. This effectively resists external forces such as tension and torque that may occur during drilling operations, thereby enhancing the overall drilling performance. The connection strength of the drill rod ensures the safety and stability of the drilling operation. The side wall of the annular groove 307 is provided with a first internal thread 308, and the outer wall of the fixing ring 404 is provided with a second external thread 405. The first internal thread 308 and the second external thread 405 cooperate with each other, and the second external thread 405 is tightly screwed into the first internal thread 308, which can further enhance the connection strength of the entire drill rod. A guide frame 406 is fixedly connected to the top edge of the drill rod 1, and the connecting frame 403 slides up and down on the side wall of the guide frame 406. The lower end of the one-way screw 401 is rotatably connected to the inner wall of the lower end of the guide frame 406, providing guidance for the connecting frame 403, ensuring that the fixing ring 404 is accurately fitted into the annular groove 307, and stabilizing the rotation of the one-way screw 401, ensuring a smooth installation process, improving the connection stability and installation efficiency of the drill rod. The outer wall of the connecting seat 301 is provided with anti-slip texture 310, and the outer wall of the lower end of the drill rod 1 is provided with multiple anti-slip particles 409. The connecting seat 301 is located at the lower end of the drill rod 1, and the connecting head 302 is located inside the lower end of the drill rod 1.

[0038] Working principle: During installation, the connector 302 is first inserted into the lower end of the drill rod 1. As the connector 302 moves upward, the cross-shaped locking block 306 inserts into the sleeve 407. At this time, the limiting block 305 moves towards the limiting cavity 303. The first external thread 309 then moves to the position of the second internal thread 408. Continuing to rotate the connecting seat 301 causes the first external thread 309 and the second internal thread 408 to engage tightly. Simultaneously, the interaction between the cross-shaped locking block 306 and the sleeve 407 allows the one-way screw 401 to rotate. The one-way slider 402 then drives the connecting frame 403 and the fixing ring 404 to move towards the annular groove 307. Due to the annular groove... The side wall of the groove 307 is provided with a first internal thread 308, and the outer wall of the fixing ring 404 is provided with a second external thread 405 that cooperates with it. As the fixing ring 404 gradually approaches the annular groove 307, the threads of the two begin to mesh. Then, as the connector 302 is completely rotated into the drill rod 1, the fixing ring 404 can be completely screwed into the annular groove 307, which further enhances the stability of the connection. At the same time, under the action of the return spring 304, the cross block 306 is tightly pressed against the inside of the sleeve 407 to prevent the drill rod 1 from loosening and shaking with the connector 302 and the drill bit 2 under the vibration and impact of the drilling operation, thus ensuring the stability of the connection between the drill rod 1 and the connector 302 and the drill bit 2.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lightweight water well drilling rod, comprising a drill bit (2), characterized in that; The upper end of the drill bit (2) is provided with a connecting mechanism (3). The connecting mechanism (3) includes a connecting seat (301) fixedly connected to the upper surface of the drill bit (2). A connecting head (302) is fixedly connected to the middle part of the upper surface of the connecting seat (301). A limiting cavity (303) is opened at the center inside the connecting head (302). A return spring (304) is fixedly connected to the bottom of the limiting cavity (303). A limiting block (305) is fixedly connected to the upper end of the return spring (304). The upper end of the limiting block (305) extends to the upper part of the connecting head (302) and is fixedly connected to a cross-shaped locking block (306). An annular groove (307) is opened at the edge of the upper surface of the connecting head (302). The upper end of the connecting seat (301) is provided with a drill rod (1), and the inner top of the drill rod (1) is provided with a secondary fixing mechanism (4). The secondary fixing mechanism (4) includes a one-way screw (401) rotatably connected to the inner top of the drill rod (1). The body of the one-way screw (401) is fitted with a one-way slider (402). The outer wall of the one-way slider (402) is uniformly fixedly connected with multiple connecting frames (403). The lower end of the connecting frame (403) is fixedly connected with a fixing ring (404). The fixing ring (404) is fitted inside the annular groove (307) during the downward movement. The lower surface of the one-way screw (401) is fixedly connected with a retainer (407). The retainer (407) is engaged with the cross retainer (306).

2. The lightweight water well drill rod according to claim 1, characterized in that: The limiting block (305) slides up and down inside the limiting cavity (303).

3. The lightweight water well drill rod according to claim 1, characterized in that: The drill rod (1) has a second internal thread (408) on its inner wall at the lower end, and the connector (302) has a first external thread (309) on its outer wall at the lower end. The second internal thread (408) and the first external thread (309) cooperate with each other.

4. A lightweight water well drill rod according to claim 1, characterized in that: The annular groove (307) has a first internal thread (308) on its sidewall, and the fixed ring (404) has a second external thread (405) on its outer wall. The first internal thread (308) and the second external thread (405) cooperate with each other.

5. A lightweight water well drill rod according to claim 1, characterized in that: A guide frame (406) is fixedly connected to the edge of the top of the drill rod (1). The connecting frame (403) slides up and down on the side wall of the guide frame (406). The lower end of the one-way screw (401) is rotatably connected to the inner wall of the lower end of the guide frame (406).

6. A lightweight water well drill rod according to claim 1, characterized in that: The outer wall of the connecting seat (301) is provided with anti-slip texture (310).

7. A lightweight water well drill rod according to claim 1, characterized in that: The outer wall of the lower end of the drill rod (1) is provided with multiple anti-slip particles (409).

8. A lightweight water well drill rod according to claim 1, characterized in that: The connecting seat (301) is located at the lower end of the drill rod (1), and the connecting head (302) is located inside the lower end of the drill rod (1).

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