Novel engineering driller core barrel drill bit dismounting pipe wrench

Abstract

The utility model discloses a novel engineering driller core barrel drill bit dismounting pipe wrench which comprises a first jaw, a connecting block is arranged in the middle of the first jaw, a handle is arranged on the connecting block, a tilting rod is fixedly connected to the connecting block, and an inserting hole is formed in the end, away from the connecting block, of the tilting rod. One end of the first jaw is rotationally connected with a second jaw through a fixing pin, the end, away from the fixing pin, of the second jaw is rotationally connected with a rotating block, a bolt is inserted into the rotating block, and the threaded end of the bolt penetrates through the inserting hole and is in meshed connection with a nut; the first jaw and the second jaw can be tightly attached to the drill bit, strong clamping force is provided, the drill bit is effectively prevented from sliding or falling off, and therefore operation safety and stability are guaranteed. Meanwhile, the unlocking process is also simple, convenient and rapid, the jaw can be easily separated only by unscrewing the nut, and the disassembly work becomes easy and free.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe wrenches, in particular to a pipe wrench for disassembling a core barrel bit of a new type of engineering drilling rig. Background Technique

[0002] With the vigorous development of urban construction in China, the number of engineering surveys is increasing day by day, and the depth of engineering surveys is getting deeper and deeper. As the survey depth deepens, the torque at the connection position of the bit at the bottom of the core barrel also increases relatively, and the connection is tighter, making it more difficult to disassemble the bit. At present, the traditional disassembly tools have weak performance in fixing the bit and poor disassembly effect, and there are great limitations in use. Therefore, many core barrel bits currently use fixed disassembly pipe wrenches, which have achieved good disassembly effects.

[0003] For the traditional bit disassembly method, the fixing performance is average, it is easy to slip during the disassembly process, and the disassembly effect is average. That is, the efficiency of disassembling the bit by the traditional method is low and the safety performance is poor. Aiming at the problems such as easy slipping and loosening and falling off of the traditional disassembly pipe wrench, this application proposes a new type of fixed disassembly pipe wrench for the core barrel bit of an engineering drilling rig with better fixing performance, which can effectively fix and disassemble the bit of the core barrel, and has the advantages of simple structure, convenient installation and disassembly, economy and practicality, and can be widely promoted and applied to engineering drilling rigs in engineering surveys. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pipe wrench for disassembling a core barrel bit of a new type of engineering drilling rig to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A pipe wrench for disassembling a core barrel bit of a new type of engineering drilling rig, including a semi-circular first jaw, a connecting block is arranged in the middle of the first jaw, a handle is arranged on the connecting block, a lever is fixedly connected to the connecting block, a jack is opened at one end of the lever away from the connecting block, one end of the first jaw is rotatably connected to a second jaw which is also semi-circular through a fixing pin, the second jaw is the same size as the first jaw, one end of the second jaw away from the fixing pin is rotatably connected to a rotating block, the axis of rotation of the rotating block is parallel to the center of the second jaw, a bolt is inserted into the rotating block, a through hole for inserting the bolt is opened on the rotating block, the threaded end of the bolt can pass through the through hole of the rotating block, and the threaded end of the bolt penetrates through the jack and is meshed with a nut.

[0006] Preferably, the connecting block is rotatably connected to the side wall of the first jaw.

[0007] Preferably, a sub-jaw is provided on the inner wall of the first jaw. One end of the sub-jaw away from the fixing pin is rotatably connected to the side wall of the first jaw. One end of the sub-jaw close to the fixing pin is connected to the side wall of the first jaw by a spring. The spring is located between the first jaw and the sub-jaw. One end of the spring is fixedly connected to the side wall of the first jaw, and the other end of the spring is fixedly connected to the side wall of the sub-jaw. The spring is in a natural state, providing a certain restoring force for the sub-jaw. A top block is fixedly connected to the side wall of the connecting block, and the top block is movably pressed against the side wall of the sub-jaw.

[0008] Preferably, serrations for increasing the frictional force with the side of the drill bit are evenly distributed on the inner circular wall surfaces of the first jaw, the second jaw, and the sub-jaw. The presence of the serrations makes the contact surface between the jaws and the side wall of the drill bit no longer smooth, but forms many tiny biting points. These biting points can generate greater frictional force when the jaws clamp the drill bit, thus more effectively preventing the drill bit from sliding or falling off during the disassembly process.

[0009] Preferably, a ball seat is fixedly connected to the side wall of the nut. One side of the jack hole close to the nut is a spherical groove, and the ball seat is movably connected in the spherical groove of the jack hole. After the nut is screwed onto the bolt, the ball seat is in the spherical groove. The connecting block drives the lever to rotate, and the bolt and the nut will rotate relative to the lever. The ball seat rotates in the spherical groove to adapt to the rotation angle of the bolt and the nut relative to the lever.

[0010] Preferably, a support frame is fixedly connected to the side wall of the first jaw, and the lever is movably connected to the support frame. The setting of the support frame can limit the rotation amplitude of the lever and prevent the lever from rotating too much.

[0011] Preferably, a limiting block is fixedly connected to the side wall of the bolt, and a limiting groove adapted to the limiting block is provided in the through hole of the rotating block.

[0012] Preferably, a threaded hole is provided on the connecting block, and the handle is threadedly engaged and connected in the threaded hole.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model can tightly fit the drill bit through the first jaw and the second jaw, providing a strong clamping force, effectively preventing the drill bit from sliding or falling off, thereby ensuring the safety and stability of the operation. At the same time, the unlocking process is also simple and fast. Only by loosening the nut can the jaws be easily separated, making the disassembly work easy. It not only simplifies the complex operation steps of traditional disassembly tools but also significantly improves the work efficiency and reduces the work intensity of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the overall structure of the present utility model Figure Ⅰ ;

[0015] Figure 2 is the exploded view of the overall structure of the present utility model;

[0016] Figure 3 is the schematic diagram of the overall structure of the present utility model Figure Ⅱ ;

[0017] Figure 4 is the exploded view of the rotating block and the bolt of the present utility model;

[0018] Figure 5 is the exploded view of the first jaw, the connecting block and the handle of the present utility model;

[0019] Figure 6 is the sectional exploded view of the first jaw, the connecting block, the secondary jaw and the top block of the present utility model.

[0020] In the figure: 1, the first jaw; 2, the connecting block; 201, the threaded hole; 3, the fixing pin; 4, the lever; 401, the jack; 5, the second jaw; 6, the rotating block; 601, the limiting groove; 7, the bolt; 701, the limiting block; 8, the nut; 9, the secondary jaw; 10, the handle; 11, the spring; 12, the top block; 13, the ball seat; 14, the support frame. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-6 , the present utility model provides a technical solution: a new type of engineering drill core barrel bit dismounting pipe wrench, including a semi-circular first jaw 1, a connecting block 2 is arranged in the middle of the first jaw 1, a handle 10 is arranged on the connecting block 2, a lever 4 is fixedly connected to the connecting block 2, a jack 401 is opened at one end of the lever 4 away from the connecting block 2, one end of the first jaw 1 is rotatably connected to a similarly semi-circular second jaw 5 through a fixing pin 3, the second jaw 5 is the same size as the first jaw 1, one end of the second jaw 5 away from the fixing pin 3 is rotatably connected to a rotating block 6, the rotating shaft of the rotating block 6 is parallel to the center of the second jaw 5, a bolt 7 is inserted into the rotating block 6, as Figure 4 shown, a through hole for inserting the bolt 7 is opened on the rotating block 6, the threaded end of the bolt 7 can pass through the through hole of the rotating block 6, and the threaded end of the bolt 7 penetrates through the jack 401 and is meshed and connected with a nut 8;

[0023] In use, first, the first jaw 1 and the second jaw 5 are connected by the fixing pin 3. When the first jaw 1 and the second jaw 5 are in the open state, the first jaw 1 and the second jaw 5 are sleeved on the drill bit. Through the cooperation between the lever 4 and the rotating block 6, the first jaw 1 and the second jaw 5 are locked, so as to clamp the core barrel drill bit to be disassembled. The user applies force through the handle 10 (as Figure 1 shown, the handle 10 applies a downward force), and the first jaw 1, the second jaw 5 and the drill bit to be unloaded are tightly wrapped together, which can effectively fix the drill bit for disassembling the core barrel.

[0024] Locking and unlocking of the first jaw 1 and the second jaw 5: Through the cooperation between the lever 4 and the rotating block 6, the locking and unlocking functions of the first jaw 1 and the second jaw 5 are realized. Specifically, the bolt 7 passes through the rotating block 6 and is inserted into the jack 401 on the lever 4, and then the nut 8 is tightened to fasten the lever 4 and the rotating block 6 together, so as to lock the relative positions of the first jaw 1 and the second jaw 5 and keep the clamping state stable, realizing locking. When unlocking is needed, just remove the nut 8 from the bolt 7, and then the ends of the first jaw 1 and the second jaw 5 away from the fixing pin 3 are opened. At this time, the first jaw 1 and the second jaw 5 can be removed from the drill bit, realizing unlocking.

[0025] As Figure 2 shown, during the process of disassembling the drill bit, in order to enable the first jaw 1 and the second jaw 5 to tightly wrap the drill bit to be unloaded. Specifically, the connecting block 2 is rotatably connected to the side wall of the first jaw 1. When the handle 10 applies a downward force in the state as Figure 1 shown, the handle 10 will drive the connecting block 2 to rotate on the first jaw 1. During the rotation process, the connecting block 2 drives the lever 4 to rotate, causing the lever 4 to pull the end of the second jaw 5 away from the fixing pin 3 through the nut 8 and the bolt 7, so as to further make the first jaw 1, the second jaw 5 and the drill bit to be unloaded tightly wrap together, which can effectively fix the drill bit for disassembling the core barrel.

[0026] As Figures 5-6 shown, in order to further wrap the drill bit to be unloaded, specifically, a sub-jaw 9 is arranged on the inner wall of the first jaw 1. The end of the sub-jaw 9 away from the fixing pin 3 is rotatably connected to the side wall of the first jaw 1, and the end of the sub-jaw 9 close to the fixing pin 3 is connected to the side wall of the first jaw 1 through a spring 11. As Figure 6As shown, the spring 11 is located between the first jaw 1 and the secondary jaw 9. One end of the spring 11 is fixedly connected to the side wall of the first jaw 1, and the other end of the spring 11 is fixedly connected to the side wall of the secondary jaw 9. The spring 11 is in a natural state, providing a certain restoring force for the secondary jaw 9. A top block 12 is fixedly connected to the side wall of the connecting block 2, and the top block 12 is movably pressed against the side wall of the secondary jaw 9.

[0027] The top block 12 is fixedly connected to the side wall of the connecting block 2 and initially maintains a certain distance from the side wall of the secondary jaw 9 without generating a pressing effect. When a downward force is applied to the handle 10 in the state as shown in Figure 1 As shown, the handle 10 will drive the connecting block 2 to rotate on the first jaw 1. During the rotation of the connecting block 2, the connecting block 2 drives the top block 12 to rotate. At this time, the top block 12 presses against the secondary jaw 9, causing the secondary jaw 9 to slide towards the side wall of the drill bit against the elastic force of the spring 11, resulting in the secondary jaw 9 closely adhering to the side wall of the drill bit. The close adhesion of the secondary jaw 9 further enhances the wrapping and clamping ability of the jaws on the drill bit, making the drill bit more stable and not easily falling off during the disassembly process.

[0028] When it is necessary to release the drill bit, first release the force on the handle 10 to gradually open the first jaw 1 and the second jaw 5. As the jaws open, the pressing effect of the top block 12 on the secondary jaw 9 weakens, and the secondary jaw 9 gradually returns to its initial position under the elastic force of the spring 11.

[0029] Specifically, the inner circular wall surfaces of the first jaw 1, the second jaw 5, and the secondary jaw 9 are evenly distributed with serrations for increasing the friction with the side of the drill bit. The presence of the serrations makes the contact surface between the jaws and the side wall of the drill bit no longer smooth but forms many tiny biting points. These biting points can generate greater friction when the jaws clamp the drill bit, thus more effectively preventing the drill bit from sliding or falling off during the disassembly process.

[0030] Specifically, a ball seat 13 is fixedly connected to the side wall of the nut 8. One side of the jack hole 401 close to the nut 8 is a spherical groove, and the ball seat 13 is movably connected in the spherical groove of the jack hole 401. After the nut 8 is screwed onto the bolt 7, the ball seat 13 is in the spherical groove. The connecting block 2 drives the lever 4 to rotate, and the bolt 7 and the nut 8 will also rotate relative to the lever 4. The ball seat 13 rotates in the spherical groove to adapt to the rotation angle of the bolt 7 and the nut 8 relative to the lever 4.

[0031] Specifically, a support frame 14 is fixedly connected to the side wall of the first jaw 1, and the lever 4 is movably connected to the support frame 14. The setting of the support frame 14 can limit the rotation amplitude of the lever 4 and prevent the lever 4 from rotating too much.

[0032] As shown in Figure 4As shown, in order to be able to limit the angle between the bolt 7 and the rotating block 6 and prevent the bolt 7 from rotating when disassembling and assembling the nut 8. Specifically, a limiting block 701 is fixedly connected to the side wall of the bolt 7, and a limiting groove 601 adapted to the limiting block 701 is formed in the through hole of the rotating block 6. When the bolt 7 is inserted into the through hole of the rotating block 6, the limiting block 701 is located inside the limiting groove 601. Under the cooperation of the limiting block 701 and the limiting groove 601, the bolt 7 can be fixed relative to the rotating block 6, which is beneficial to screwing the nut 8 on or off.

[0033] As Figure 5 As shown, in order to be able to conveniently disassemble the handle 10 from the connecting block 2. Specifically, a threaded hole 201 is formed in the connecting block 2, and the handle 10 is threadedly engaged and connected in the threaded hole 201.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel pipe clamp for removing a core tube drill bit of an engineering drilling rig, comprising a semicircular first jaw (1), a connecting block (2) being arranged in the middle of the first jaw (1), and a handle (10) being arranged on the connecting block (2), characterized in that: The connecting block (2) is fixedly connected to a tilting rod (4), and a socket (401) is provided at one end of the tilting rod (4) away from the connecting block (2). One end of the first jaw (1) is rotatably connected to a second jaw (5) which is also semicircular via a fixing pin (3), and one end of the second jaw (5) which is away from the fixing pin (3) is rotatably connected to a rotating block (6). A bolt (7) is inserted into the rotating block (6), and a threaded end of the bolt (7) passes through the socket (401) and is meshedly connected to a nut (8).

2. A new type of engineering drilling rig core tube drill bit removal pipe clamp according to claim 1, characterized in that: The connecting block (2) is rotatably connected to the side wall of the first jaw (1).

3. A new type of engineering drilling rig core tube drill bit removal pipe clamp according to claim 2, characterized in that: An auxiliary jaw (9) is arranged on the inner wall of the first jaw (1); one end of the auxiliary jaw (9) away from the fixing pin (3) is rotatably connected to the side wall of the first jaw (1); one end of the auxiliary jaw (9) close to the fixing pin (3) is connected to the side wall of the first jaw (1) via a spring (11); a top block (12) is fixedly connected to the side wall of the connecting block (2); the top block (12) is movably pressed against the side wall of the auxiliary jaw (9).

4. A new type of engineering drilling rig core tube drill bit removal pipe clamp according to claim 3, characterized in that: The inner circular wall surfaces of the first jaw (1), the second jaw (5) and the auxiliary jaw (9) are evenly distributed with saw teeth for increasing the friction with the drill side.

5. The novel engineering drilling rig core tube drill bit removal pipe clamp according to claim 2 is characterized by: A ball seat (13) is fixedly connected to the side wall of the nut (8), and a side of the insertion hole (401) close to the nut (8) is a spherical groove, and the ball seat (13) is movably connected in the spherical groove of the insertion hole (401).

6. A new type of engineering drilling rig core tube drill bit removal pipe clamp according to claim 2, characterized in that: A support frame (14) is fixedly connected to the side wall of the first jaw (1), and the tilting rod (4) is movably connected to the support frame (14).

7. The novel engineering drilling rig core tube drill bit removal pipe clamp according to claim 1 is characterized by: A limiting block (701) is fixedly connected to the side wall of the bolt (7), and a limiting groove (601) adapted to the limiting block (701) is provided in the through hole of the rotating block (6).

8. The novel engineering drilling rig core tube drill bit removal pipe clamp according to claim 1 is characterized by: The connection block (2) is provided with a threaded hole (201), and the handle (10) is connected to the threaded hole (201) through threaded engagement.

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