A disc-shaped drill pipe stopper device

Abstract

The application relates to the technical field of drill rod limiting, in particular to a disc-shaped drill rod limiter device; the device comprises a disc body, the disc body is disc-shaped and is used for limiting a drill rod, a circular groove is arranged at the center of the disc body, rectangular grooves are uniformly arranged on the groove wall of the circular groove, clamping blocks are slidably connected in the rectangular grooves, a first spring is arranged between the clamping blocks and the groove bottom of the rectangular grooves, a sliding groove is arranged on one end surface of the disc body, the sliding groove is communicated with the corresponding rectangular groove, and a circular ring is arranged on the side of the disc body where the sliding groove is arranged; the limiter can be fixed on the outer wall of the drill rod through the cooperation of the first spring and the clamping blocks, a certain gap can be formed between the drill rods, the staff can be conveniently carried, and the damage caused by the collision between the drill rods is reduced.

Description

Technical Field

[0001] This invention relates to the field of drill pipe limiting technology, specifically a disc-shaped drill pipe limiting device. Background Technology

[0002] Drill pipe is a threaded steel tube used to connect drilling rig surface equipment to drilling equipment or bottom hole assembly located at the bottom of the well. Its purpose is to transport drilling mud to the drill bit and, together with the drill bit, raise, lower, or rotate the bottom hole assembly. Drill pipe must be able to withstand enormous internal and external pressures, torsion, bending, and vibration. In the oil and gas extraction and refining process, drill pipe can be reused multiple times. Drill pipe is classified into three categories: crisscross drill pipe, standard drill pipe, and heavy-duty drill pipe.

[0003] Mining drilling rigs are mainly used for drilling operations. They come with a variety of drill rods and a large quantity of them. Especially when drilling deep holes with high-power drilling rigs, the number of drill rods used is large. Each drill rod is heavy, and most drill rods are stacked. During the process of handling and stacking drill rods, workers' fingers are easily crushed by the drill rods, causing injury. In addition, collisions between adjacent drill rods during handling can also cause some damage to some drill rods, thus affecting their use.

[0004] In view of this, in order to overcome the above-mentioned technical problems, the present invention proposes a disc-shaped drill pipe limiter device, which solves the above-mentioned technical problems. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a disc-shaped drill rod limiter device. This invention uses a No. 1 spring in conjunction with a clamping block to fix the limiter to the outer wall of the drill rod, so that a certain gap can be formed between the drill rods. This facilitates the handling of the drill rods by the workers and reduces the damage caused by collisions between the drill rods.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a disc-shaped drill pipe limiter device according to the present invention, comprising:

[0007] The disc body is disc-shaped and used to limit the position of the drill pipe.

[0008] A circular groove; the circular groove is formed through the center of the disc body;

[0009] Rectangular grooves; the rectangular grooves are evenly distributed on the walls of the circular groove;

[0010] Clamping block; the clamping block is slidably connected within the rectangular groove;

[0011] Spring No. 1; the clamping block is connected to the bottom of the rectangular groove by Spring No. 1.

[0012] Preferably, a sliding groove is formed on one end face of the disc body; the sliding groove communicates with the corresponding rectangular groove;

[0013] A ring is provided on one side of the disc body where the groove is formed;

[0014] The circular ring is hinged to an arc-shaped rod on one side near the disc body; the other end of the arc-shaped rod passes through the groove and is hinged to the outer wall of the corresponding clamping block.

[0015] The distance from one end of the arc-shaped rod to the center of the disc is less than the distance from the other end to the center of the disc.

[0016] Preferably, the arc-shaped rod is composed of an arc rod, an arc sleeve, and a tension spring; adjacent arc rods are connected by the tension spring; the arc sleeve is sleeved on the tension spring; the arc sleeve is slidably connected to the arc rods on both sides.

[0017] Preferably, the end face of the disc is uniformly provided with through holes; a J-shaped rod is slidably connected in the through holes; one end of the J-shaped rod is fixedly connected to the ring, and the other end is fixedly connected to a retaining ring; the retaining ring protrudes on the side near the clamping block; the end face of the clamping block away from the ring is provided with a retaining groove; the retaining ring engages with the retaining grooves on the plurality of clamping blocks.

[0018] Preferably, a limiting rod is hinged to the corner of the J-shaped rod; the length of the limiting rod is equal to the moving distance of the ring.

[0019] Preferably, a J-shaped hook is fixedly connected to the side of the clamping block near the first spring; the longer end of the J-shaped hook is rotatably connected to the clamping block; the J-shaped hook passes through the side of the disc and is slidably connected to the disc.

[0020] Preferably, the shorter end of the J-shaped hook is provided with a groove; the groove is located close to the disc body; a cylindrical block is slidably connected in the groove; the cylindrical block is connected to the bottom of the groove by a second spring; and a guide angle is provided on the outer surface of the cylindrical block.

[0021] Preferably, an elastic membrane is connected between the bottom of the rectangular groove and the corresponding clamping block; the elastic membrane is disposed close to the sliding groove; and a vent hole is provided through the end face of the clamping block near the drill rod.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This invention uses a No. 1 spring in conjunction with a clamping block to fix the limiter to the outer wall of the drill rod, so that a certain gap can be formed between the drill rods, which facilitates the handling by the workers and reduces the damage caused by the collision between the drill rods.

[0024] 2. Before the disc is fitted onto the drill rod, the present invention first presses the ring, causing the ring to move closer to the disc. During the movement of the ring closer to the disc, the arc rod drives the clamping block to move towards the first spring, thereby causing the clamping block to retract into the rectangular groove. At this time, the disc is then fitted onto the outer wall of the drill rod. Then the ring is released. After the clamping block is no longer under the force of the arc rod, the first spring will push the clamping block to clamp the outer wall of the drill rod, making the installation process of the entire limiter device more convenient.

[0025] 3. In this invention, the clamping block will drive the ring away from the disk body through the arc-shaped rod. The arc-shaped rod will simultaneously drive the retaining ring to move closer to the clamping block through the J-shaped rod. Since the clamping block is provided with a retaining groove, the retaining ring can be locked in the corresponding retaining groove, thereby locking the clamping block and improving the stability of the disk body connected to the outer wall of the drill pipe. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a perspective view of the present invention;

[0028] Figure 2 This is a perspective view of the invention from another angle;

[0029] Figure 3 yes Figure 2 Enlarged view of point A;

[0030] Figure 4 This is a cross-sectional view of the present invention;

[0031] Figure 5 yes Figure 4 Enlarged view of point B;

[0032] Figure 6 yes Figure 4 Enlarged view of point C;

[0033] Figure 7 This is a cross-sectional view of the present invention from another angle;

[0034] Figure 8 This is a diagram showing the connection positions of the limiting rod and the J-shaped rod in this invention;

[0035] Figure 9 This is a perspective view of the clamping block and the first spring in this invention;

[0036] Figure 10 This is a structural diagram of the arc-shaped rod in this invention;

[0037] In the diagram: disc 1, circular groove 11, rectangular groove 12, sliding groove 13, through hole 14, clamping block 2, slot 21, vent hole 22, spring 1 3, ring 4, arc rod 5, arc rod 51, arc sleeve 52, tension spring 53, J-shaped rod 6, limiting rod 61, retaining ring 7, J-shaped hook 8, groove 81, cylindrical block 82, spring 2 83, guide angle 84, elastic membrane 9. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0039] like Figures 1 to 10 As shown, the disc-shaped drill pipe limiter device of the present invention includes:

[0040] Disc 1; The disc 1 is disc-shaped and is used to limit the position of the drill pipe;

[0041] Circular groove 11; the circular groove 11 is formed through the center of the disc body 1;

[0042] Rectangular groove 12; the rectangular groove 12 is evenly formed on the groove wall of the circular groove 11;

[0043] Clamping block 2; the clamping block 2 is slidably connected within the rectangular groove 12;

[0044] Spring 3; the clamping block 2 is connected to the bottom of the rectangular groove 12 by spring 3;

[0045] During operation, workers' fingers are easily crushed by drill rods when they are being moved and stacked, causing injury. Additionally, collisions between adjacent drill rods during transport can also damage some of them, affecting their usability.

[0046] Therefore, after the drill rod is processed, a conical piece is fitted onto one end of the drill rod, and the center of the disc 1 is brought close to the conical piece, so that the circular groove 11 is located at the tip of the conical piece. Then, the disc 1 is moved closer to the drill rod, so that the disc 1 is fitted onto the conical piece. The conical piece will squeeze the clamping block 2. After being squeezed, the clamping block 2 moves along the rectangular groove 12 towards the bottom of the rectangular groove 12. At this time, the first spring 3 is compressed. While the first spring 3 is compressed, it will also give a reaction force to the conical piece. Until the clamping block 2 contacts the outer wall of the drill rod, the first spring 3 will transmit the reaction force to the drill rod through the clamping block 2, realizing the purpose of clamping the drill rod. Thus, the disc 1 is fixed on the outer wall of the drill rod. In this way, during the stacking of drill rods, adjacent drill rods will be limited by the disc 1, preventing the drill rods from fitting together. This design ensures a certain gap between drill rods, facilitating handling and preventing damage from collisions. Furthermore, the drill rods are elastically connected to the disk 1 via spring 3, which effectively dampens vibrations during transport, reducing damage caused by drill rod vibration. The combination of clamping block 2 and spring 3 allows the invention to be applied to drill rods of different specifications and cross-sectional shapes, making it widely applicable. Additionally, it acts as a limiter when the drill rods need heat dissipation, ensuring a gap between them and improving heat dissipation. Damage to spiral drill rods can affect their use, and damage to the end connections of ordinary drill rods can affect the connection; therefore, limiting the drill rods to reduce collisions is necessary.

[0047] The present invention uses a spring 3 in conjunction with a clamping block 2 to fix the limiter on the outer wall of the drill rod, so that a certain gap can be formed between the drill rods, which facilitates the handling of the drill rods by the workers and reduces the damage caused by the collision between the drill rods.

[0048] In one embodiment of the present invention, a sliding groove 13 is provided on one end face of the disc body 1; the sliding groove 13 is connected to the corresponding rectangular groove 12;

[0049] A ring 4 is provided on one side of the disc body 1 where the groove 13 is opened;

[0050] The ring 4 is hinged to the arc-shaped rod 5 on the side near the disc 1; the other end of the arc-shaped rod 5 passes through the slide groove 13 and is hinged to the outer wall of the corresponding clamping block 2;

[0051] The distance from one end of the arc-shaped rod 5 to the center of the disc 1 is less than the distance from the other end to the center of the disc 1;

[0052] During operation, before placing the disc 1 onto the drill rod, press the ring 4 to make it move closer to the disc 1. As the ring 4 moves closer to the disc 1, it will drive the clamping block 2 towards the first spring 3 via the arc rod 5, causing the clamping block 2 to retract into the rectangular groove 12. At this time, control the disc 1 to be placed on the outer wall of the drill rod. Then release the ring 4. After the clamping block 2 is no longer under the force of the arc rod 5, the first spring 3 will push the clamping block 2 to clamp the outer wall of the drill rod, making the installation process of the entire limit device more convenient. In addition, as the clamping block 2 moves along the rectangular groove 12, it will spray gas from the slide groove 13 to impact and clean some impurities on the outer wall of the drill rod.

[0053] In one embodiment of the present invention, the arc-shaped rod 5 is composed of an arc rod 51, an arc sleeve 52, and a tension spring 53; adjacent arc rods 51 are connected by the tension spring 53; the arc sleeve 52 is sleeved on the tension spring 53; the arc sleeve 52 is slidably connected to the arc rods 51 on both sides.

[0054] During operation, for irregular drill pipe outer walls, such as spiral drill pipes, after one clamping block 2 is obstructed by the drill pipe outer wall, the other clamping blocks 2 can continue to push the clamping block 2 closer to the drill pipe under the action of the corresponding No. 1 spring 3. The principle is that the arc rod 51 and the arc sleeve 52 cooperate to make the distance between the ring 4 and the clamping block 2 variable, so that the clamping distance and force of adjacent clamping blocks 2 on the drill pipe outer wall do not affect each other. The tension spring 53 is set to provide a radial component force for the clamping block 2 to achieve further clamping, and on the other hand, it makes the arc rods 51 connected at both ends closer to each other, so that the ring 4 pushes the clamping block 2 without the push delay caused by the gap between the arc rods 51.

[0055] In one embodiment of the present invention, the end face of the disc body 1 is uniformly provided with through holes 14; a J-shaped rod 6 is slidably connected in the through holes 14; one end of the J-shaped rod 6 is fixedly connected to the ring 4, and the other end is fixedly connected to a retaining ring 7; the retaining ring 7 protrudes on the side near the clamping block 2; the end face of the clamping block 2 away from the ring 4 is provided with a retaining groove 21; the retaining ring 7 engages with the retaining groove 21 on the plurality of clamping blocks 2;

[0056] During operation, when spring 3 drives clamping block 2 to clamp the outer wall of the drill pipe, clamping block 2 will move ring 4 away from disk 1 via arc rod 5. Arc rod 5 will simultaneously move clasp 7 closer to clamping block 2 via J-shaped rod 6. Because clamping block 2 is provided with a slot 21, clasp 7 can be locked in the corresponding slot 21, thereby locking clamping block 2 and improving the stability of disk 1 connected to the outer wall of drill pipe. At the same time, as ring 4 moves closer to disk 1, ring 4 will move clasp 7 away from slot 21 via J-shaped rod 6, thereby unlocking clamping block 2 and ensuring that clamping block 2 can slide along rectangular groove 12. To avoid interference between slot 21 and clasp 7, the width of slot 21 can be greater than the width of clasp 7, ensuring that clamping block 2 can move slightly while clasp 7 moves without affecting the locking effect. In this embodiment, the connection between J-shaped rod 6 and ring 4 can be changed to a hinge to achieve the purpose of locking while clamping the irregular outer wall of drill pipe.

[0057] In one embodiment of the present invention, a limiting rod 61 is hinged to the corner of the J-shaped rod 6; the length of the limiting rod 61 is equal to the moving distance of the ring 4.

[0058] During operation, after the retaining ring 7 moves away from the extreme position of the disc body 1, the limiting rod 61 is moved so that the length direction of the limiting rod 61 is aligned with the sliding direction of the J-shaped rod 6. This causes the end of the limiting rod 61 to abut against the outer wall of the disc body 1, preventing the retaining ring 7 from returning to its original position. This achieves the purpose of limiting the distance between the retaining ring 7 and the disc body 1, thereby causing the clamping block 2 to retract into the rectangular groove 12. This eliminates the need for the operator to continuously press the ring 4, reducing the difficulty of operating the disc body 1 on the drill pipe and saving labor costs. After the clasp 7 needs to be returned to its original position, the operator can move the limiting rod 61 so that the limiting rod 61 is perpendicular to the sliding direction of the J-shaped rod 6. In order to make the end of the limiting rod 61 more stable against the outer wall of the disc body 1, a corresponding recess can be set on the outer wall of the disc body 1 so that the end of the limiting rod 61 is in the recess, reducing the risk of the end of the limiting rod 61 slipping off the surface of the disc body 1. The cross-section of the limiting rod 61 is set in a U-shape so that it wraps around the J-shaped rod 6 during the limiting process to avoid bending.

[0059] In one embodiment of the present invention, a J-shaped hook 8 is fixedly connected to the side of the clamping block 2 near the first spring 3; the longer end of the J-shaped hook 8 is rotatably connected to the clamping block 2; the J-shaped hook 8 passes through the side of the disc body 1 and is slidably connected to the disc body 1.

[0060] During operation, when multiple drill pipes need to be connected and transported, pressing the ring 4 causes the clamping block 2 to move away from the center of the disk 1. This causes the clamping block 2 to extend the J-shaped hook 8 from inside the disk 1, creating a gap between the shorter end of the J-shaped hook 8 and the arc surface of the disk. The J-shaped hook 8 then latches onto another J-shaped hook 8 on the disk 1 through this gap. Releasing the ring 4 then causes the spring 3 to move the corresponding clamping block 2 and J-shaped hook 8 closer to the center of the disk 1, closing the gap between the shorter end of the J-shaped hook 8 and the arc surface of the disk 1. This connects adjacent disks 1, thus connecting adjacent drill pipes and ensuring safe transport or storage. During stacking, the drill rods will not fall due to shaking, thus preventing personal injury and improving safety during transportation and storage. By rotating the longer end of the J-hook 8 with the clamping block 2, the J-hook 8 can be adjusted and then engaged, facilitating the connection of adjacent discs 1. During transportation, the J-hook 8, in conjunction with the first spring 3, further cushions the vibration between adjacent discs 1. Pulling the clamping block 2 can compress the gas in the corresponding rectangular groove 12, allowing the gas to be drawn in and out of the slide 13, thereby driving the airflow around the drill rod. After the airflow is circulated, the temperature of the drill rod or the present invention is reduced during transportation, preventing the performance of the present invention from being affected by excessive temperature.

[0061] In one embodiment of the present invention, the shorter end of the J-shaped hook 8 is provided with a groove 81; the groove 81 is located close to the disc body 1; a cylindrical block 82 is slidably connected in the groove 81; the cylindrical block 82 is connected to the bottom of the groove 81 by a second spring 83; a guide angle 84 is provided on the outer side of the cylindrical block 82.

[0062] During operation, after adjusting the angle of the J-shaped hook 8, it is directly brought close to the J-shaped hook 8 on the adjacent disc 1. This causes the guide angle 84 on the cylindrical block 82 to press against the J-shaped hook 8 on the adjacent disc 1. As a result, the cylindrical block 82 slides along the groove 81 towards the bottom of the groove 81 after being pressed by the guide angle 84. At the same time, the second spring 83 is compressed. When the gap between the cylindrical block 82 and the outer wall of the disc 1 is equal to the cross-sectional diameter of the J-shaped hook 8, the cylindrical block 82 is reset by the second spring 83, causing it to engage with the J-shaped hook 8 on the adjacent disc 1. This allows the two discs 1 to be connected without pressing the ring 4, making it more convenient for operators to use.

[0063] In one embodiment of the present invention, an elastic membrane 9 is connected between the bottom of the rectangular groove 12 and the corresponding clamping block 2; the elastic membrane 9 is disposed near the sliding groove 13; and a vent hole 22 is provided through the end face of the clamping block 2 near the drill rod.

[0064] During operation, as the clamping block 2 moves closer to the spring, it compresses the gas inside the rectangular groove 12. The increased pressure causes the elastic diaphragm 9 to bulge and block the slide groove 13. The gas then flows out through the vent hole 22, impacting the outer wall of the drill rod or the opposite end face of the clamping block 2. This causes impurities on the clamping block 2 to fall off under the impact of the airflow, reducing the likelihood of impurities scratching the threads of the drill rod during clamping. Simultaneously, as the clamping block 2 moves away from the spring, some gas is replenished through the vent hole 22, allowing most of the gas to escape. The elastic membrane 9 is opened by the chute 13 to replenish the gas inside the rectangular groove 12. As the elastic membrane 9 is stretched and narrowed, a gap is formed between it and the wall of the rectangular groove 12, allowing the gas to flow. At the same time, the pressure of the clamping block 2 holding the drill rod is equal to the pressure divided by the contact area. The setting of the vent hole 22 reduces the contact area between the clamping block 2 and the drill rod, thereby increasing the pressure of the clamping block 2 on the drill rod under the same pressure, thus increasing the friction between the clamping block 2 and the drill rod, thereby improving the stability of the disc 1 on the drill rod and reducing the risk of personal injury or property damage caused by the disc 1 falling off the drill rod during transportation and movement.

[0065] The specific workflow is as follows:

[0066] After the drill rod is processed, a conical piece is fitted onto one end of the drill rod. Then, the center of the disc 1 is brought close to the conical piece, so that the circular groove 11 is located at the tip of the conical piece. The disc 1 is then moved closer to the drill rod, so that the disc 1 is fitted onto the conical piece. The conical piece will squeeze the clamping block 2. After being squeezed, the clamping block 2 moves along the rectangular groove 12 toward the bottom of the rectangular groove 12. At this time, the first spring 3 is compressed. While the first spring 3 is compressed, it will also give the conical piece a reaction force until the clamping block 2 contacts the outer wall of the drill rod. The first spring 3 will then transmit the reaction force to the drill rod through the clamping block 2, thereby achieving the purpose of clamping the drill rod and fixing the disc 1 to the outer wall of the drill rod.

[0067] Before fitting the disc 1 onto the drill rod, press the ring 4, causing it to move closer to the disc 1. As the ring 4 moves closer, the arc-shaped rod 5 drives the clamping block 2 towards the first spring 3, causing the clamping block 2 to retract into the rectangular groove 12. Then, the disc 1 is fitted onto the outer wall of the drill rod. After releasing the ring 4, the first spring 3 pushes the clamping block 2 to clamp the outer wall of the drill rod, making the installation of the limiter device more convenient. Furthermore, as the clamping block 2 moves along the rectangular groove 12, gas is ejected from the slide groove 13. For irregular drill rod outer walls, such as spiral drill rods, one of the... After clamping block 2 is obstructed by the outer wall of the drill pipe, the other clamping blocks 2 can continue to push clamping block 2 closer to the drill pipe under the action of the corresponding first spring 3. The principle is that the distance between the ring 4 and the clamping block 2 can be adjusted by the cooperation of the arc rod 51 and the arc sleeve 52, so that the clamping distance and force of adjacent clamping blocks 2 on the outer wall of the drill pipe do not affect each other. The tension spring 53 provides a radial component force for clamping block 2 to achieve further clamping, and also makes the arc rods 51 connected at both ends move closer to each other. During the process of clamping the outer wall of the drill pipe by the first spring 3, the clamping block 2 will drive the ring 4 away from the disk 1 through the arc rod 5. The arc rod 5 will simultaneously drive the ring 4 away from the disk 1 through the J-shaped rod 6. As the moving shackle 7 moves closer to the clamping block 2, the shackle 7 can be locked into the corresponding groove 21 on the clamping block 2, thus improving the stability of the disk body 1 connected to the outer wall of the drill pipe. Simultaneously, as the ring 4 approaches the disk body 1, the ring 4 will drive the shackle 7 away from the groove 21 via the J-shaped rod 6, unlocking the clamping block 2 and ensuring that the clamping block 2 can slide along the rectangular groove 12. To avoid interference between the groove 21 and the shackle 7, the width of the groove 21 can be greater than the width of the shackle 7, ensuring that the clamping block 2 can move slightly while the shackle 7 moves. After the shackle 7 moves away to the limit position of the disk body 1, the limiting rod 61 is moved, causing the limiting rod 61 to... The length direction is consistent with the sliding direction of the J-shaped rod 6, so that the end of the limiting rod 61 abuts against the outer wall of the disc body 1, preventing the retaining ring 7 from returning to its original position, thereby limiting the distance between the retaining ring 7 and the disc body 1, so that the clamping block 2 retracts into the rectangular groove 12, so that the operator does not need to press the ring 4 continuously, reducing the difficulty of operating the disc body 1 on the drill rod and saving the operator's physical strength. When the retaining ring 7 needs to return to its original position, the limiting rod 61 is moved so that the limiting rod 61 is perpendicular to the sliding direction of the J-shaped rod 6. In order to make the end of the limiting rod 61 abut against the outer wall of the disc body 1 more stable, a corresponding recess can be set on the outer wall of the disc body 1 so that the end of the limiting rod 61 abuts into the recess.When multiple drill pipes need to be connected and transported, pressing the ring 4 causes the clamping block 2 to move away from the center of the disk body 1. This causes the clamping block 2 to extend the J-shaped hook 8 from inside the disk body 1, creating a gap between the shorter end of the J-shaped hook 8 and the arc surface of the disk. The J-shaped hook 8 is then fastened to another J-shaped hook 8 on the disk body 1 through this gap. Releasing the ring 4 then causes the spring 3 to move the corresponding clamping block 2 and J-shaped hook 8 closer to the center of the disk body 1, closing the gap between the shorter end of the J-shaped hook 8 and the arc surface of the disk body 1. This connects adjacent disks 1, thereby connecting adjacent drill pipes. By rotating the longer end of the J-shaped hook 8 with the clamping block 2, the J-shaped hook 8 can be adjusted in angle before engaging, facilitating the connection of adjacent disks 1. Pulling the clamping block 2 compresses the gas in the corresponding rectangular groove 12, allowing the gas to be drawn in and drawn out from the slide groove 13, thus driving the airflow around the drill pipe. After adjusting the angle of the J-shaped hook 8, directly bring the J-shaped hook 8 close to the J-shaped hook 8 on the adjacent disk 1, so that the guide angle 84 on the cylindrical block 82 compresses the J-shaped hook 8 on the adjacent disk 1. Hook 8, so that cylindrical block 82 is squeezed by guide angle 84 and slides along groove 81 toward the bottom of groove 81. At the same time, spring 83 is compressed. When the gap between cylindrical block 82 and the outer wall of disk 1 is equal to the cross-sectional diameter of hook 8, as spring 83 drives cylindrical block 82 to reset, cylindrical block 82 is engaged with hook 8 on adjacent disk 1, so that the two disks 1 are connected without pressing ring 4. As clamp 2 moves toward spring, clamp 2 will squeeze the gas inside rectangular groove 12. The gas inside the rectangular groove 12 is compressed, increasing its pressure. This causes the elastic membrane 9 to bulge and block the slide groove 13. The gas then flows out through the vent hole 22, impacting the outer wall of the drill rod or the opposite end face of the clamping block 2. This causes impurities on the clamping block 2 to fall off under the impact of the airflow, reducing the risk of impurities scratching the threads of the drill rod during clamping. Simultaneously, as the clamping block 2 moves away from the spring, some gas is replenished within the rectangular groove 12 through the vent hole 22. Most of the gas is released from the slide groove 13, forcing the elastic membrane 9 to open and replenish the gas inside the rectangular groove 12.

[0068] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disc-shaped drill rod limiter device, characterized in that, include: Disc body (1); The disc body (1) is disc-shaped and is used to limit the drill rod; A circular groove (11); the circular groove (11) is formed through the center of the disc body (1); Rectangular groove (12); the rectangular groove (12) is evenly formed on the groove wall of the circular groove (11); Clamping block (2); the clamping block (2) is slidably connected within the rectangular groove (12); Spring No. 1 (3); The clamping block (2) is connected to the bottom of the rectangular groove (12) by Spring No. 1 (3); A sliding groove (13) is provided on one end face of the disc body (1); the sliding groove (13) is connected to the corresponding rectangular groove (12); The disc body (1) has a ring (4) on one side where the groove (13) is opened; The ring (4) is hinged to the arc rod (5) on the side near the disc (1); the other end of the arc rod (5) passes through the slide groove (13) and is hinged to the outer wall of the corresponding clamping block (2); The distance from one end of the arc-shaped rod (5) to the center of the disc (1) is less than the distance from the other end to the center of the disc (1).

2. A disc-shaped drill pipe limiter device according to claim 1, characterized in that: The arc-shaped rod (5) is composed of an arc rod (51), an arc sleeve (52) and a tension spring (53); adjacent arc rods (51) are connected by the tension spring (53); the arc sleeve (52) is sleeved on the tension spring (53); the arc sleeve (52) is slidably connected to the arc rods (51) on both sides.

3. A disc-shaped drill pipe limiter device according to claim 1, characterized in that: The end face of the disc (1) is uniformly provided with through holes (14); a J-shaped rod (6) is slidably connected in the through hole (14); one end of the J-shaped rod (6) is fixedly connected to the ring (4), and the other end is fixedly connected to a retaining ring (7); the retaining ring (7) protrudes on the side near the clamping block (2); the end face of the clamping block (2) away from the ring (4) is provided with a retaining groove (21); the retaining ring (7) engages with the retaining groove (21) on the multiple clamping blocks (2).

4. A disc-shaped drill pipe limiter device according to claim 3, characterized in that: A limiting rod (61) is hinged at the corner of the J-shaped rod (6); the length of the limiting rod (61) is equal to the moving distance of the ring (4).

5. A disc-shaped drill pipe limiter device according to claim 1, characterized in that: The clamping block (2) is fixedly connected to a J-shaped hook (8) on the side near the first spring (3); the longer end of the J-shaped hook (8) is rotatably connected to the clamping block (2); the J-shaped hook (8) passes through the side of the disc (1) and is slidably connected to the disc (1).

6. A disc-shaped drill pipe limiter device according to claim 5, characterized in that: The shorter end of the J-shaped hook (8) is provided with a groove (81); the groove (81) is located close to the disc body (1); a cylindrical block (82) is slidably connected in the groove (81); the cylindrical block (82) is connected to the bottom of the groove (81) by a second spring (83); the outer side of the cylindrical block (82) is provided with a guide angle (84).

7. A disc-shaped drill pipe limiter device according to claim 1, characterized in that: An elastic membrane (9) is connected between the bottom of the rectangular groove (12) and the corresponding clamping block (2); the elastic membrane (9) is located near the sliding groove (13); a vent hole (22) is provided through the end face of the clamping block (2) near the drill rod.

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