Drill rod pulling-out device

Abstract

The utility model belongs to the technical field of drilling, and particularly relates to a drill rod pulling-out device which comprises a vertically-arranged reverse hitting rod, and a connecting structure used for being connected with the tail of a drill rod is arranged at the lower end of the reverse hitting rod. The counter-hitting rod is sleeved with a heavy hammer in sliding fit with the counter-hitting rod; an upper limiting structure for limiting the upward movement of the heavy hammer is further arranged on the reverse hitting rod, the position of the upper limiting structure in the vertical direction is adjustable, and the heavy hammer is located between the upper limiting structure and the connecting structure. The drill rod clamped in the stratum can be conveniently taken out, and the drill rod is prevented from being damaged. The structure is simple, the operation is convenient, and the popularization and the application are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling, and in particular relates to a drill rod pulling device. Background Art

[0002] During geological drilling, when encountering complex strata, the drill pipe can easily become stuck in the formation, requiring extraction using pry bars or mechanical rotary extraction. During this operation, the drill pipe can easily deform or break, rendering it unusable. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a drill rod pulling device, which is convenient for taking out the drill rod stuck in the stratum and avoids damage to the drill rod.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a drill rod pulling device, including a vertically arranged reaction rod, the lower end of the reaction rod is provided with a connecting structure for connecting to the tail of the drill rod; a sliding-fitting heavy hammer is sleeved on the reaction rod; the reaction rod is also provided with an upper limit structure for limiting the upward movement of the heavy hammer, the position of the upper limit structure in the vertical direction is adjustable, and the heavy hammer is located between the upper limit structure and the connecting structure.

[0005] Furthermore, the upper limit structure includes a limiting sleeve coaxially arranged with the back-play rod, and the limiting sleeve is sleeved on the back-play rod; an internal thread section is provided on the inner wall of the limiting sleeve, and the back-play rod is provided with an external thread section threadedly matched with the internal thread section, and the length of the external thread section is greater than the length of the internal thread section;

[0006] The outer diameter of the limiting sleeve is larger than the diameter of the through hole on the heavy hammer for the back-hitting rod to pass through.

[0007] Furthermore, the upper limit structure includes a bolt and a locking nut;

[0008] The anti-hitting rod is provided with an adjustment hole, and the adjustment holes are provided in plurality, and the plurality of adjustment holes are evenly distributed along the vertical direction;

[0009] The bolt passes through the adjustment hole on the counter-strike rod and is locked by a locking nut.

[0010] Furthermore, it also includes a lower limit structure, which is arranged on the anti-hitting rod and located adjacent to and above the connecting structure; the heavy hammer is located between the upper limit structure and the lower limit structure.

[0011] Furthermore, the lower limiting structure is a limiting nut threadedly connected to the back-hitting rod.

[0012] Furthermore, it also includes a handle arranged on the heavy hammer.

[0013] Furthermore, the handle includes a horizontal rod, one end of which is connected to the outer side of the heavy hammer, and the other end extends in a direction away from the axial direction of the counter-hitting rod; at least two horizontal rods are provided, and at least two horizontal rods are evenly distributed along the circumference of the counter-hitting rod.

[0014] Furthermore, the anti-hitting rod, the heavy hammer, the upper limit structure, the lower limit structure and the handle are all made of steel.

[0015] Compared with the prior art, the present invention has the following advantages: it provides a drill rod extraction device, which facilitates the extraction of a drill rod stuck in the formation and prevents damage to the drill rod. It also has the advantages of simple structure, easy operation, and easy promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of adjusting the position of the limit sleeve to be close to the top of the kick-back lever when the upper limit structure is a limit sleeve;

[0017] Figure 2 This is a schematic diagram of adjusting the position of the limit sleeve to be close to the middle of the kick-back lever when the upper limit structure is a limit sleeve;

[0018] Figure 3 This is a schematic diagram showing how to adjust the position of the bolt and lock nut to be close to the top of the kick-back lever when the upper limit structure is a bolt and lock nut;

[0019] Figure 4 This is a schematic diagram of adjusting the position of the bolt and lock nut to near the middle of the kick-back lever when the upper limit structure is a bolt and lock nut;

[0020] Figure numerals: 1-anti-hitting rod; 110-connecting structure; 120-lower limit structure; 130-adjusting hole; 2-weight hammer; 210-horizontal rod; 3-upper limit structure; 310-gasket; 320-locking nut; 330-bolt; 4-drill rod; 410-downward concave threaded hole; 5-limiting sleeve. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] A drill rod extraction device includes a vertically arranged reaction rod 1, the lower end of which is provided with a connecting structure 110 for connecting to the tail of a drill rod 4; a sliding-fitting heavy hammer 2 is sleeved on the reaction rod 1; the reaction rod 1 is also provided with an upper limit structure 3 for limiting the upward movement of the heavy hammer 2, the position of the upper limit structure 3 in the vertical direction is adjustable, and the heavy hammer 2 is located between the upper limit structure 3 and the connecting structure 110.

[0023] When the drill rod 4 is inserted into the stratum, the tail of the drill rod 4 faces upward. The connecting structure 110 can be a threaded hole that is recessed upward, or an external thread section, which is correspondingly arranged according to the structure of the tail of the drill rod 4. It is only necessary to ensure that the lower end of the counter-strike rod 1 is connected to the tail of the drill rod 4. When the tail of the drill rod 4 has a threaded hole 410 that is recessed downward, the connecting structure 110 is an external thread section that is threadedly matched with the threaded hole 410 that is recessed downward. The counter-strike rod 1 provides a guide for mounting support and vertical up and down movement for the weight 2. The upper limit structure 3 is adjustable in position along the vertical direction, which is convenient for providing suitable force conditions for the operator. By making the weight 2 move upward and hit the upper limit structure 3, a vertical upward driving force is provided for the extraction of the drill rod 4, which is convenient for taking out the drill rod 4 stuck in the stratum and avoiding damage to the drill rod 4.

[0024] The upper limit structure 3 has various embodiments:

[0025] In the first embodiment, the upper limit structure 3 includes a limiting sleeve 5 coaxially arranged with the back-hit rod 1. The limiting sleeve 5 is sleeved on the back-hit rod 1. An internal thread segment is provided on the inner wall of the limiting sleeve 5. The back-hit rod 1 is provided with an external thread segment threadedly engaged with the internal thread segment, and the length of the external thread segment is greater than the length of the internal thread segment. The outer diameter of the limiting sleeve 5 is greater than the diameter of the through hole in the weight 2 for the back-hit rod 1 to pass through. The relative position of the limiting sleeve 5 and the back-hit rod 1 in the vertical direction can be adjusted by rotating the limiting sleeve 5.

[0026] In the second embodiment, the upper limit structure 3 includes a bolt 330 and a locking nut 320. The back-up lever 1 is provided with a plurality of adjustment holes 130, which are evenly distributed along the vertical direction. The bolt 330 passes through the adjustment holes 130 on the back-up lever 1 and is locked by the locking nut 320. By adjusting the installation position of the bolt 330, the relative position of the bolt 330 and the back-up lever 1 in the vertical direction can be adjusted.

[0027] Preferably, a gasket 310 is further included, and the gasket 310 is arranged between the head of the bolt 330 and the side wall of the kick-back bar 1. The gasket 310 can be a metal gasket or a rubber gasket.

[0028] In order to prevent the weight 2 from falling out of the lower end of the counter-hit bar 1, it is preferred that a lower limiting structure 120 is further included. The lower limiting structure 120 is provided on the counter-hit bar 1 and is located adjacent to and above the connecting structure 110. The weight 2 is located between the upper limiting structure 3 and the lower limiting structure 120. By providing the lower limiting structure 120, the weight 2 can be effectively prevented from falling out of the lower end of the counter-hit bar 1.

[0029] Preferably, the lower limiting structure 120 is a limiting nut threadedly connected to the kick-back rod 1 .

[0030] In order to facilitate construction workers to hold it, preferably, a handle is also provided on the heavy hammer 2.

[0031] The handle has various embodiments, including but not limited to the following:

[0032] In embodiment one, the handle includes a collar and a connecting rod. The collar is mounted outside the weight 2 and is coaxially arranged with the counter-hitting rod 1. There is a gap between the inner side wall of the collar and the outer side surface of the weight 2. The collar and the outer peripheral surface of the weight 2 are connected by a connecting rod. There are at least three connecting rods, and at least three connecting rods are evenly distributed along the circumference of the counter-hitting rod 1.

[0033] In the second embodiment, the handle includes a horizontal rod 210, one end of which is connected to the outer side of the heavy hammer 2, and the other end extends in the axial direction away from the anti-hitting rod 1; at least two horizontal rods 210 are provided, and at least two horizontal rods 210 are evenly distributed along the circumference of the anti-hitting rod 1.

[0034] The anti-hitting rod 1, the heavy hammer 2, the upper limit structure 3, the lower limit structure 120 and the handle can all be made of hard alloy. Preferably, the anti-hitting rod 1, the heavy hammer 2, the upper limit structure 3, the lower limit structure 120 and the handle are all made of steel.

[0035] The embodiments of the specific implementation are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drill rod extraction device, characterized in that: The invention comprises a vertically arranged counter-acting rod (1), wherein the lower end of the counter-acting rod (1) is provided with a connecting structure (110) for connecting to the tail of a drill rod (4); a sliding-fitting heavy hammer (2) is sleeved on the counter-acting rod (1); and the counter-acting rod (1) is also provided with an upper limit structure (3) for limiting the upward movement of the heavy hammer (2); the position of the upper limit structure (3) in the vertical direction is adjustable, and the heavy hammer (2) is located between the upper limit structure (3) and the connecting structure (110).

2. A drill rod extraction device according to claim 1, characterized in that: The upper limit structure (3) comprises a limiting sleeve (5) coaxially arranged with the back-play rod (1), and the limiting sleeve (5) is sleeved on the back-play rod (1); an internal thread section is provided on the inner wall of the limiting sleeve (5), and an external thread section threadably matched with the internal thread section is provided on the back-play rod (1), and the length of the external thread section is greater than the length of the internal thread section; The outer diameter of the limiting sleeve (5) is larger than the diameter of the through hole on the heavy hammer (2) for the back-hitting rod (1) to pass through.

3. The drill rod extraction device according to claim 1, wherein: The upper limit structure (3) includes a bolt (330) and a locking nut (320); The back-hitting rod (1) is provided with an adjustment hole (130), and a plurality of the adjustment holes (130) are provided, and the plurality of the adjustment holes (130) are evenly distributed along the vertical direction; The bolt (330) passes through the adjustment hole (130) on the back-hitting rod (1) and is locked by a locking nut (320).

4. A drill rod extraction device according to any one of claims 1 to 3, characterized in that: The invention also includes a lower limit structure (120), which is arranged on the back-hitting rod (1) and is located adjacent to and above the connecting structure (110); the heavy hammer (2) is located between the upper limit structure (3) and the lower limit structure (120).

5. A drill rod extraction device according to claim 4, characterized in that: The lower limiting structure (120) is a limiting nut threadedly connected to the back-hitting rod (1).

6. A drill rod extraction device according to claim 5, characterized in that: It also includes a handle arranged on the heavy hammer (2).

7. A drill rod extraction device according to claim 6, characterized in that: The handle comprises a horizontal rod (210), one end of which is connected to the outer side surface of the weight (2), and the other end of which extends in a direction away from the axial direction of the counter-hitting rod (1); at least two horizontal rods (210) are provided, and at least two horizontal rods (210) are evenly distributed along the circumference of the counter-hitting rod (1).

8. The drill rod extraction device according to claim 6, characterized in that: The counter-hitting rod (1), the heavy hammer (2), the upper limit structure (3), the lower limit structure (120) and the handle are all made of steel.

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