Roller bit grabbing device

Abstract

The utility model discloses a roller bit grabbing device which comprises a connecting section connected with a drill rod, a sleeve connected with the connecting section and a fixing piece arranged in the sleeve, in the grabbing and fishing process, the sleeve can be arranged outside a roller bit in a sleeving mode, and the fixing piece can be in contact with the roller bit to achieve fixing. In the process of fishing the drill bit, the drill bit is connected with the drill rod through the connecting section, then the drill rod carries the device to go down to the working face of the drill bit, then the sleeve is arranged outside the roller bit in a sleeving mode, the fixing piece makes contact with the roller bit, the roller bit and the sleeve can be fixed, and then the roller bit is taken out through the drill rod.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, and particularly relates to a cone bit grasping device. Background Art

[0002] Before freeze construction, during the drilling process of the drill rig, the bit often falls off for various reasons. Especially in non-metal mines such as iron mines, the rock hardness is high, and the torque borne by the bit is large, so it is very easy for the cone bit to become unthreaded and fall off. In the past, when the drilling depth was not deep, the bit with a thread could be fished up with the drill pipe. However, in recent years, with the deepening of the freeze depth, it is not uncommon for the drilling depth to exceed 800m in the shaft. It can be imagined how difficult it is to fish the cone bit in such a deep hole. Once the bit falls into the hole, it will delay the effective working time at least, and at worst, the hole will be scrapped, causing heavy economic losses. Therefore, this application designs a cone bit grasping device. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a cone bit grasping device that is convenient for fishing the cone bit.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme: a cone bit grasping device, including a connection section connected to the drill pipe, a casing connected to the connection section, and a fixing member arranged in the casing. During the grasping and fishing process, the casing can be sleeved outside the cone bit, and the fixing member can contact the cone bit to achieve fixation.

[0005] Further, the fixing member is multiple rows of steel strands and / or steel wires arranged along the length direction of the casing.

[0006] Further, the casing also has a plurality of slurry outlets.

[0007] Further, the connection section adopts a columnar structure with an internal thread structure or an external thread.

[0008] Further, the casing includes a connection part and a grasping part. The grasping part includes a plurality of blocks hinged to the connection part, and the plurality of blocks can be spliced together to form a cylindrical shape.

[0009] Further, the casing further includes a locking member. The locking member includes a collar that can slide on the connection part, and a plurality of connecting rods with one end hinged to the collar and the other end hinged to the plurality of blocks one by one.

[0010] Further, the collar can be connected to the connection part by screws.

[0011] Further, the collar includes a first ring body slidably connected to the connecting portion and a second ring body rotatably connected to the first ring body and threadedly connected to the connecting portion.

[0012] The beneficial effects of the present utility model are embodied in:

[0013] During the process of retrieving the roller bit of the present utility model, first connect it to the drill pipe through the connecting section, then lower the device to the working surface of the bit through the drill pipe, then sleeve the casing on the outside of the roller bit, and make the fixing member contact the roller bit to achieve the fixation between the roller bit and the casing, and then take it out through the drill pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view of the structure of the first embodiment of the roller bit grasping device of the present utility model;

[0015] Figure 2 is the front view of the structure of the second embodiment of the roller bit grasping device of the present utility model;

[0016] Figure 3 is the top view of the structure of the roller bit grasping device of the present utility model.

[0017] The marks of each component in the drawings are: 1, connecting section; 2, casing; 201, slurry outlet; 202, connecting portion; 203, grasping portion; 2031, block; 204, locking member; 2041, collar; 2042, connecting rod; 2043, first ring body; 2044, second ring body; 3, fixing member; 301, steel strand; 302, steel wire rope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0019] Embodiment 1

[0020] See Figure 1 .

[0021] The present utility model includes a connecting section 1 connected to a drill pipe, a casing 2 connected to the connecting section 1, and a fixing member 3 disposed inside the casing 2. During the grasping and retrieving process, the casing 2 can be sleeved on the outside of the roller bit, and the fixing member 3 can contact the roller bit to achieve fixation.

[0022] During the process of salvaging the roller bit of the utility model, first connect it to the drill pipe through the connecting section 1, then carry the device down to the working surface of the bit through the drill pipe, and then sleuth the casing 2 outside the roller bit. Let the fixing member 3 contact the roller bit to realize the fixation between the roller bit and the casing 2, and then take it out through the drill pipe.

[0023] In this embodiment, refer to Figure 3 , the fixing member 3 is multiple rows of steel strands 301 and / or steel wires 302 arranged along the length direction of the casing 2. With this design, during the grasping and salvaging process, after the steel strands 301 and / or steel wires 302 contact the roller bit, the whole device is driven to rotate by the drill pipe, so that the steel strands 301 and / or steel wires 302 can be deformed and extend into the gaps of the roller bit. Then, through the friction force between the steel strands 301 and / or steel wires 302 and the roller bit, the fixation of the roller bit in the casing 2 is realized; and in this embodiment, the steel strands 301 and / or steel wires 302 in different rows are staggeredly distributed;

[0024] In this embodiment, refer to Figure 1 , the casing 2 also has a plurality of slurry outlets 201. With this design, when salvaging the roller bit, the slurry in the original drill hole can be discharged through the slurry outlets 201.

[0025] In this embodiment, refer to Figure 1 , the connecting section 1 adopts a columnar structure with an internal thread structure or an external thread. With this design, the application structure is suitable for different drill pipes.

[0026] In this embodiment, refer to Figure 1 , the casing 2 includes a connecting portion 202 and a grasping portion 203. The grasping portion 203 includes a plurality of blocks 2031 hinged to the connecting portion 202, and the plurality of blocks 2031 can be spliced together to form a cylindrical shape. With this design, by splicing the blocks 2031 together to form a cylindrical shape and fixing them, the process of grasping and salvaging the roller bit can be carried out. After salvaging, the grasping portion 203 is expanded to facilitate the removal of the roller bit.

[0027] In this embodiment, refer to Figure 1, the casing 2 further includes a locking member 204. The locking member 204 includes a collar 2041 slidable on the connecting portion 202 and a plurality of connecting rods 2042 having one end hinged to the collar 2041 and the other end hinged to the plurality of blocks 2031 in a one-to-one correspondence. With such a design, by moving the collar 2041 to a suitable position and fixing it, the blocks 2031 are spliced together to form a cylindrical shape, and then the process of grasping and salvaging the roller bit can be carried out. After salvaging, by releasing the fixation of the collar 2041, the grasping portion 203 can be expanded, which is convenient for taking out the roller bit and for cleaning the inside of the casing 2. And in this embodiment, the slurry outlet 201 can be opened on the connecting portion 202, and the steel strand 301 and / or the steel wire rope 302 can be arranged on the grasping portion 203.

[0028] In this embodiment, referring to Figure 1 , the collar 2041 can be connected to the connecting portion 202 by screws. With such a design, the fixation and unlocking operations of the collar 2041 are realized, and the structure is simple and the operation is convenient.

[0029] Embodiment Two

[0030] It should be noted that in this embodiment, it is only different from Embodiment One in the structure of the collar 2041 and the fixation operation of the collar 2041, and other structures are the same as those in Embodiment One.

[0031] In this embodiment, referring to Figure 2 , the collar 2041 includes a first ring body 2043 slidably connected to the connecting portion 202 and a second ring body 2044 rotatably connected to the first ring body 2043 and threadedly connected to the connecting portion 202. With such a design, by rotating the second ring body 2044, the movement of the collar 2041 can be realized, and thus the expansion and combination of the grasping portion 203 can be realized. And through the threaded cooperation between the second ring body 2044 and the connecting portion 202, during the expansion and combination process of the grasping portion 203, a certain state can be maintained, without manual maintenance, and the operation is convenient.

[0032] It should be understood that the examples and embodiments described herein are only for illustration and are not intended to limit the present invention. Those skilled in the art can make various modifications or changes according to it. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0033] It should be noted that if there are directional indications such as up, down, left, right, front, back... involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between the components in a certain specific posture as shown in the drawings. If this specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, such descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, "a plurality of" means two or more. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or inability to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

Claims

1. A cone bit grasping device, characterized in that, It includes a connection section (1) connected to a drill pipe, a casing (2) connected to the connection section (1), and a fixing member (3) disposed inside the casing (2). During the grasping and fishing process, the casing (2) can be sleeved outside the cone bit, and the fixing member (3) can contact the cone bit to achieve fixation.

2. The cone bit grasping device according to claim 1, wherein The fixing member (3) is multiple rows of steel strands (301) and / or wire ropes (302) arranged along the length direction of the casing (2).

3. The rock bit gripping device according to claim 1, wherein The casing (2) also has a plurality of slurry outlets (201).

4. The cone bit gripping device according to claim 1, characterized in that, The connection section (1) adopts a columnar structure with an internal thread structure or an external thread.

5. The cone bit grasping device according to any one of claims 1-4, characterized in that, The casing (2) includes a connection part (202) and a grasping part (203). The grasping part (203) includes a plurality of blocks (2031) hinged to the connection part (202), and the plurality of blocks (2031) can be spliced with each other to form a cylindrical shape.

6. The cone bit grasping device according to claim 5, wherein, The casing (2) further includes a locking member (204). The locking member (204) includes a collar (2041) slidable on the connection part (202) and a plurality of connecting rods (2042) with one end hinged to the collar (2041) and the other end hinged to the plurality of blocks (2031) in one-to-one correspondence.

7. The roller bit grasping device according to claim 6, wherein The collar (2041) can be connected to the connection part (202) by screws.

8. The cone bit grasping device according to claim 6, characterized in that, The collar (2041) includes a first ring body (2043) slidably connected to the connection part (202) and a second ring body (2044) rotatably connected to the first ring body (2043) and threadedly connected to the connection part (202).

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