Broken rod fishing device

Abstract

The utility model discloses a broken rod fishing device which comprises a bearing part, a fixing piece arranged on the inner side of the bearing part and a sleeve which is arranged on the outer side of the bearing part in a sleeved mode and can be matched with the bearing part in a sliding mode and fixed to the bearing part, the fixing piece can be connected with a broken rod, and the connecting end of the fixing piece and the broken rod is located in the sleeve. The fixing piece is made to linearly descend along the drill hole through the casing pipe, the process of aligning the fixing piece and the broken rod is omitted, the bearing part is arranged, the bearing part is in sliding fit with the casing pipe, after the drill rod is fished, the connecting part of the fixing piece and the broken rod is exposed by moving the casing pipe, the broken rod is convenient to detach, and in the process of moving the casing pipe, the broken rod can be conveniently detached. And the bearing part can also bring out silt in the sleeve, so that the situation that mud is adhered to the interior of the sleeve, and the mud is solidified to occupy the space in the sleeve to affect fishing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling tool fishing, in particular to a broken rod fishing device. Background Art

[0002] During the drilling process of frozen holes, the drill rod may break due to operation or fatigue and aging of the drill rod. Especially in non-metal mines such as iron mines, the rock hardness is high, and the torque borne by the drill rod is large, so it is extremely easy to break due to fatigue. Once the drill rod breaks and falls into the hole, it needs to be fished out in time. Otherwise, after a long time, the drill rod will be adsorbed by the mud and cause a buried drill accident, which will delay the effective working time at least and cause the hole to be scrapped and re-drilled at worst, resulting in great economic losses. The improvement of this device can achieve accurate alignment, greatly shorten the fishing operation time, improve work efficiency, reduce economic losses and other problems.

[0003] Currently, for fishing broken rods, the traditional method is to buy a tap with a taper. One end of the tap is connected to the drill rod, and the other end has a thread. It is lowered into the hole driven by the drill rod. Relying on the experience of the team leader and the machine operator, first align the fishing device with the broken head tap with the broken rod. After alignment, the fishing device is tapered into the broken drill rod, and then the tap is rotated. After tightening the drill rod with the thread of the tap, it is lifted out of the ground. The disadvantage of this method is that the diameter of the front section of the tap ≤ 64mm, and it is difficult to quickly and accurately align the drill rod in a 200mm hole. Therefore, a broken rod fishing device with simple alignment is designed. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a broken rod fishing device with simple alignment when fishing a broken drill rod.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme: a broken rod fishing device, comprising a receiving part, a fixing part arranged inside the receiving part, and a sleeve sleeved outside the receiving part and slidably matched and fixed with the receiving part. The fixing part can be connected to the broken rod, and the connecting end of the fixing part and the broken rod is located inside the sleeve.

[0006] Further, the fixing part is a tapered rod provided with an external thread, and the small end of the tapered rod can extend into the slot hole of the broken rod.

[0007] Further, the fixing part includes a connecting rod, a moving block slidably matched with the connecting rod along its length direction, a plurality of limiting plates elastically hinged on the connecting rod, and a plurality of connecting rods with one end hinged to the plurality of limiting plates in one-to-one correspondence and the other end hinged to the moving block. The limiting plates can extend into the slot hole of the broken rod along with the connecting rod, and the side surface of the limiting plate can abut against the hole wall of the slot hole of the broken rod.

[0008] Furthermore, the fixing member includes a connecting column and a clamping block that elastically slides with the connecting column along its width direction, and the bottom of the clamping block is wedge-shaped, and the clamping block can be clamped at the connection between the corresponding thin section and thick section of the broken rod.

[0009] Furthermore, the clamping block includes a connecting block elastically slidingly matched with the connecting column and a U-shaped block spaced apart from the connecting block, and the thick section can be clamped between the connecting block and the U-shaped block, and the thin section can be clamped into the U-shaped block.

[0010] Furthermore, it also includes a guide ring arranged in the sleeve, and the side surface of the guide ring is gradually inclined from bottom to top.

[0011] Furthermore, it also includes a connecting portion arranged on the receiving portion, and the connecting portion can be a columnar structure with an internal thread or an external thread.

[0012] Furthermore, the receiving portion is wedge-shaped on a side close to the sleeve.

[0013] The beneficial effects of the utility model are embodied in:

[0014] The broken rod salvaging device of the utility model allows the fixing part to descend linearly along the drill hole through the casing, that is, the process of aligning the fixing part with the broken rod is eliminated. By arranging a receiving part, the receiving part and the casing are slidably matched. After the drill rod is salvaged, the connecting part between the fixing part and the broken rod is exposed by moving the casing, which is convenient for disassembling the broken rod. In the process of moving the casing, the receiving part can also bring out the mud and sand in the casing, so as to avoid the adhesion of mud inside the casing, and the solidification of the mud occupies the space inside the casing and affects the salvage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural cross-sectional view of a first embodiment of a broken rod salvaging device of the utility model;

[0016] Figure 2 This is a structural cross-sectional view of a second embodiment of the broken rod salvaging device of the utility model;

[0017] Figure 3 yes Figure 2 A magnified view of part A;

[0018] Figure 4 This is a cross-sectional view of the structure of the broken rod salvaging device of the utility model in the unpractical state in the third embodiment;

[0019] Figure 5 It is a structural sectional view of the broken rod salvaging device of the utility model in the usage state in the third embodiment.

[0020] The components in the accompanying drawings are marked as follows: 1. receiving part; 2. fixing piece; 201. tapered rod; 202. connecting rod; 203. moving block; 204. limiting plate; 205. connecting rod; 206. connecting column; 207. clamping block; 2071. connecting block; 2072. U-shaped block; 3. sleeve; 4. broken rod; 401. thin section; 402. thick section; 5. guide ring; 6. connecting part. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figure 1 .

[0024] The utility model provides a broken rod salvaging device, comprising a receiving portion 1, a fixing member 2 arranged on the inner side of the receiving portion 1, and a sleeve 3 which is sleeved on the outer side of the receiving portion 1 and can be slidably matched with and fixed to the receiving portion 1, and the fixing member 2 can be connected to the broken rod 4, and the connecting end of the fixing member 2 is located in the sleeve 3.

[0025] The utility model allows the fixing member 2 to descend linearly along the borehole through the casing 3, that is, the process of aligning the fixing member 2 with the broken rod 4 is eliminated. The receiving portion 1 is provided, and the receiving portion 1 is slidably matched with the casing 3. After the drill rod is salvaged, the connecting portion between the fixing member 2 and the broken rod 4 is exposed by moving the casing 3, so that the broken rod 4 is easy to disassemble. In the process of moving the casing 3, the receiving portion 1 can also bring out the mud and sand in the casing 3, so as to avoid the adhesion of mud inside the casing 3, and the solidification of the mud occupies the space inside the casing 3 and affects the salvage. The diameter of the casing 3 can be slightly smaller than the diameter of the borehole.

[0026] In this embodiment, see Figure 1 The fixing member 2 is a tapered rod 201 with an external thread, and the small end of the tapered rod 201 can be inserted into the slot of the broken rod 4. With this design, during salvage, the tapered rod 201 can be inserted into the slot of the broken rod 4 to achieve connection with the broken rod 4. The structure is simple and the operation is convenient. In addition, a rubber pad can be added to the outside of the tapered rod 201 to increase the friction force to ensure stable connection.

[0027] In this embodiment, see Figure 1, further comprising a guide ring 5 disposed within the sleeve 3, and the side surface of the guide ring 5 is gradually inclined from bottom to top. With such a design, if the broken rod 4 is inclined within the drill hole, when the sleeve 3 moves downward, the guide ring 5 can straighten it and align it with the fixing member 2.

[0028] In this embodiment, referring to Figure 1 , further comprising a connecting portion 6 disposed on the receiving portion 1, and the connecting portion 6 can be a columnar structure with internal or external threads. With such a design, the downward movement operation can be achieved by connecting the connecting portion 6 with a new drill rod, and when the tapered rod 201 is dropped into the slot hole of the broken rod 4, rotation can also be achieved by connecting with a new drill rod, further enhancing the precision of the connection between the tapered rod 201 and the slot hole of the broken rod 4.

[0029] In this embodiment, referring to Figure 1 , one side of the receiving portion 1 corresponding to the side close to the sleeve 3 is wedge-shaped. With such a design, it is convenient to better push out the mud within the sleeve 3.

[0030] Embodiment Two

[0031] It should be noted that in this embodiment, only the structure of the fixing member 2 is different from that in Embodiment One, and other parts are the same.

[0032] In this embodiment, referring to Figure 2 、 3 , the fixing member 2 includes a connecting rod 202, a moving block 203 slidably matched with the connecting rod 202 along its length direction, a plurality of limiting plates 204 elastically hinged on the connecting rod 202, and a plurality of connecting rods 205 with one end hinged to the plurality of limiting plates 204 in one-to-one correspondence and the other end hinged to the moving block 203. And the limiting plates 204 can extend into the slot hole of the broken rod 4 along with the connecting rod 202, and the side surface of the limiting plate 204 can abut against the hole wall of the slot hole of the broken rod 4. With such a design, during the process of the connecting rod 202 and the limiting plate 204 extending into the slot hole of the broken rod 4, the elastic hinge of the limiting plate 204 is in a compressed state. When the limiting plate 204 completely enters the slot hole of the broken rod 4, the elastic hinge of the limiting plate 204 is still in a compressed state and has a tendency to recover. At this time, the limiting plate 204 abuts against the hole wall of the slot hole of the broken rod 4, realizing the connection between the fixing member 2 and the broken rod 4. When the broken rod 4 is fished out and the connection part between the broken rod 4 and the fixing member 2 is exposed, by moving the moving block 203, the limiting plate 204 can be retracted to be able to withdraw from the slot hole of the broken rod 4;

[0033] And in this embodiment, the elastic hinge of the limiting plate 204 is realized by a torsion spring;

[0034] And in this embodiment, the moving block 203 can be a ring sleeved outside the connecting rod 202, and at this time the connecting rod 205 is located outside the connecting rod 202;

[0035] The moving block 203 can also be a combination of an annular part sleeved outside the connecting rod 202 and a block part sliding inside the connecting rod 202. At this time, the connecting rod 205 passes through the connecting rod 202 and can slide on the connecting rod 202.

[0036] And in this embodiment, when the connecting rod 205 passes through the connecting rod 202, the connecting rod 202 can be hollow at the bottom.

[0037] Embodiment Three

[0038] It should be noted that in this embodiment, only the structure of the fixing member 2 is different from that in Embodiment One, and other parts are the same.

[0039] In this embodiment, referring to Figure 4 , 5 , the fixing member 2 includes a connecting column 206 and a clamping block 207 that is elastically slidably engaged with the connecting column 206 along its width direction. The bottom of the clamping block 207 is wedge-shaped, and the clamping block 207 can be clamped at the connection between the corresponding thin section 401 and thick section 402 of the broken rod 4.

[0040] The clamping block 207 includes a connecting block 2071 that is elastically slidably engaged with the connecting column 206 and a U-shaped block 2072 that is spaced from the connecting block 2071. The thick section 402 can be clamped in the space between the connecting block 2071 and the U-shaped block 2072, and the thin section 401 can be inserted into the U-shaped block 2072.

[0041] With such a design, when the sleeve 3 moves downward and the fixing member 2 contacts the broken rod 4, during the downward movement process, the clamping block 207 starts to slide until the thick section 402 moves to the gap and the thin section 401 moves to the U-shaped block 2072. At this time, the clamping block 207 has a reset tendency due to elasticity, that is, the clamping and fixing of the broken rod 4 is achieved.

[0042] It should be understood that the examples and embodiments described herein are only for illustration and are not used 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.

[0043] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0044] 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 only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the 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 cannot be implemented, 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 broken rod fishing device, characterized in that, It includes a receiving part (1), a fixing member (2) arranged inside the receiving part (1), and a sleeve (3) sleeved outside the receiving part (1) and capable of sliding and fixing with the receiving part (1). The fixing member (2) can be connected to a broken rod (4), and the connection end of the fixing member (2) and the broken rod (4) is located inside the sleeve (3).

2. The broken rod fishing device according to claim 1, wherein, The fixing member (2) is a tapered rod (201) provided with an external thread, and the small end of the tapered rod (201) can extend into the slot hole of the broken rod (4).

3. The broken rod fishing device according to claim 1, characterized in that, The fixing member (2) includes a connecting rod (202), a moving block (203) slidably matched with the connecting rod (202) along its length direction, a plurality of limiting plates (204) elastically hinged on the connecting rod (202), and a plurality of connecting rods (205) with one end hinged to the plurality of limiting plates (204) one by one and the other end hinged to the moving block (203). The limiting plates (204) can extend into the slot hole of the broken rod (4) along with the connecting rod (202), and the side surface of the limiting plate (204) can abut against the hole wall of the slot hole of the broken rod (4).

4. The broken rod fishing device according to claim 1, characterized in that, The fixing member (2) includes a connecting column (206) and a clamping block (207) elastically slidably matched with the connecting column (206) along its width direction. The bottom of the clamping block (207) is wedge-shaped, and the clamping block (207) can be clamped at the connection of the corresponding thin section (401) and thick section (402) of the broken rod (4).

5. The broken rod fishing device according to claim 4, characterized in that, The clamping block (207) includes a connecting block (2071) elastically slidably matched with the connecting column (206) and a U-shaped block (2072) arranged at an interval from the connecting block (2071). The thick section (402) can be clamped in the interval between the connecting block (2071) and the U-shaped block (2072), and the thin section (401) can be clamped into the U-shaped block (2072).

6. The broken rod fishing device according to any one of claims 1-5, characterized in that, It further includes a guiding ring (5) arranged inside the sleeve (3), and the side surface of the guiding ring (5) is gradually inclined from bottom to top.

7. The broken rod fishing device according to any one of claims 1-5, characterized in that, It further includes a connecting part (6) arranged on the receiving part (1), and the connecting part (6) can be a columnar structure with internal or external threads.

8. The broken rod fishing device according to any one of claims 1-5, characterized in that, One side of the receiving part (1) close to the sleeve (3) is wedge-shaped.

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