A drill tool chain anti-loosening structure

Abstract

The utility model discloses a drilling tool chain anti-loose structure, include: first component, second component, first protection ring and second protection ring, first component with second component is screwed, first component has first anti-loose outer thread, and first protection ring has with first anti-loose inner thread of matching first anti-loose outer thread, second component has second anti-loose outer thread, and second protection ring has with second anti-loose inner thread of matching second anti-loose outer thread, the utility model discloses can effectively under the condition of not destroying each component of drilling tool chain, the threaded connection between protection component, play safe anti-loose's effect, eliminate the hidden danger of safety.

Description

Technical Field

[0001] This utility model relates to the technical field of mining equipment, and in particular to a drill chain anti-loosening structure. Background Technology

[0002] During drilling operations, when drill pipe needs to be disassembled, the drill rig swivel reverses to loosen the threaded connections between the drill pipe and other components. Simultaneously, the threaded connections of other drill string chain components above the drill pipe are also affected and may loosen, leading to a safety hazard due to loosened threads. Currently, there is no effective design to prevent drill string chain threads from loosening. Typically, drilling operators weld the upper and lower threaded connections together on-site. However, this method can damage the end faces of the threaded connections or the welded components, and it is difficult to disassemble when maintenance of the drill rig swivel or adapters is required. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a drill chain anti-loosening structure, which can be used to protect the threaded connections between various components of the drill chain (such as drill rig slewing head, shock absorber and adapter).

[0004] The drill chain anti-loosening structure provided by this utility model can effectively protect the threaded connections between components without damaging the components of the drill chain, thus playing a role in preventing loosening and eliminating safety hazards.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A drill string chain anti-loosening structure includes: a first component, a second component, a first protective ring, and a second protective ring;

[0007] The first component and the second component are threadedly connected;

[0008] The first component has a first anti-loosening external thread, and the first protective ring has a first anti-loosening internal thread that matches the first anti-loosening external thread;

[0009] The second component has a second anti-loosening external thread, and the second protective ring has a second anti-loosening internal thread that matches the second anti-loosening external thread.

[0010] In the aforementioned drill chain anti-loosening structure, the first anti-loosening external thread and the second anti-loosening external thread have opposite helical directions.

[0011] In the aforementioned drill chain anti-loosening structure, the first protective ring and the second protective ring are fixedly connected by fasteners.

[0012] In the aforementioned drill chain anti-loosening structure, the first protective ring has one or more first through holes along its axial direction;

[0013] The second protective ring has one or more second through slots along its axial direction, and the second through slots are arc-shaped;

[0014] The fastener passes through a first through hole and a second through slot.

[0015] The aforementioned drill chain anti-loosening structure includes, wherein the fastener comprises: a bolt passing through the first through hole and the second through groove, a nut threadedly connected to the bolt, a washer disposed between the nut and the second protective ring, and a flat washer disposed between the nut and the washer;

[0016] Alternatively, the fastener may include: a bolt passing through the first through hole and the second through slot, a nut threadedly connected to the bolt, a washer disposed between the bolt head and the second protective ring, and a flat washer disposed between the bolt head and the washer.

[0017] In the aforementioned drill chain anti-loosening structure, the shape of the washer is the same as the shape of the second protective ring.

[0018] In the aforementioned drill chain anti-loosening structure, the washers include a first washer and a second washer, both of which are semi-circular.

[0019] In the aforementioned drill chain anti-loosening structure, the first protective ring abuts against the second protective ring.

[0020] In the aforementioned drill chain anti-loosening structure, the first component has an accommodating space, and the second component has a connecting portion, wherein the connecting portion is disposed inside the accommodating space;

[0021] The inner wall of the accommodating space of the first component is threadedly connected to the outer wall of the connecting portion of the second component.

[0022] In the aforementioned drill chain anti-loosening structure, the connecting portion of the second component is frustoconical;

[0023] The outer peripheral surface of the first component is flush with the outer peripheral surface of the second component.

[0024] Because this utility model employs the aforementioned technology, it has the following positive effects compared to existing technologies:

[0025] (1) This utility model can effectively protect the threaded connection between components without damaging the components of the drill chain, play a role in preventing loosening and eliminating safety hazards. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a top view schematic diagram of a drill chain anti-loosening structure according to some embodiments of this specification.

[0028] Figure 2 The drill chain anti-loosening structure shown in some embodiments of this specification Figure 1 The sectional view at point AA.

[0029] Figure 3 This is a side view schematic diagram of a drill chain anti-loosening structure according to some embodiments of this specification.

[0030] Figure 4 This is an exploded schematic diagram of a drill chain anti-loosening structure according to some embodiments of this specification.

[0031] In the attached diagram: 1 First component; 2 Second component; 3 First protective ring; 4 Second protective ring; 21 Connecting part; 31 First through hole; 41 Second through groove; 51 Bolt; 52 Nut; 53 Washer; 54 Flat washer; 531 First washer; 532 Second washer. Detailed Implementation

[0032] To more clearly illustrate the technical solutions of the embodiments in this specification, the embodiments will be described in detail below with reference to the accompanying drawings. Obviously, the content described below are some examples or embodiments of this specification. For those skilled in the art, without creative effort, the technical solutions or means disclosed in this specification can be applied to other scenarios based on this technical content.

[0033] It should be understood that the terms "system," "device," "equipment," "part" and / or "component," "unit" and / or "module" used in this specification are a method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other words can achieve the same purpose, they may be replaced by other expressions.

[0034] Unless otherwise specified, the technical terms used to describe components, elements, etc. in this specification are not singular but may include plural. Generally speaking, terms such as "comprising" or "including" only indicate that explicitly identified steps, elements, or components are included, and these steps, elements, and components do not constitute an exclusive list, as the described method or apparatus may also include other steps or components.

[0035] In the description of this specification, it should be understood that the directional descriptions, such as up, down, front, back, left, and right, indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. These descriptions are for the convenience of describing this application and for simplification, and do not 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 limitations on this application. In the description of this specification, unless otherwise expressly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in this specification in conjunction with the specific content of the technical solution.

[0036] Figure 1 This is a top view schematic diagram of a drill chain anti-loosening structure according to some embodiments of this specification. Figure 2 The drill chain anti-loosening structure shown in some embodiments of this specification Figure 1 Sectional view at point AA in the diagram. Figure 3 This is a side view schematic diagram of a drill chain anti-loosening structure according to some embodiments of this specification. Figure 4 This is an exploded schematic diagram of a drill chain anti-loosening structure according to some embodiments of this specification. See also Figures 1 to 4 As shown, in one or more embodiments of this specification, the drill chain anti-loosening structure may include: a first component 1, a second component 2, a first protective ring 3, and a second protective ring 4. In some embodiments, the first component 1 and the second component 2 are threadedly connected (e.g., through mutually compatible main threads). In some embodiments, the first component 1 has an axial direction, and the second component 2 also has an axial direction, with the axial directions of the first component 1 and the second component 2 coinciding.

[0037] In some embodiments, the first component 1 and the second component 2 are capable of transmitting torque and axial pressure during operation. In some embodiments, in order to protect the threaded connection between the first component 1 and the second component 2 and prevent the threads from loosening when the first component 1 and the second component 2 are reversed (e.g., when the drill rig slewing head reverses), a first protective ring 3 and a second protective ring 4 can be arranged to protect the threaded connection between the first component 1 and the second component 2.

[0038] Specifically, in some embodiments, the first component 1 has a first anti-loosening external thread, and the first protective ring 3 has a first anti-loosening internal thread that matches the first anti-loosening external thread. In some embodiments, the second component 2 has a second anti-loosening external thread, and the second protective ring 4 has a second anti-loosening internal thread that matches the second anti-loosening external thread.

[0039] In some embodiments, the first protective ring 3 is threadedly connected to the first component 1 via a first anti-loosening external thread and a first anti-loosening internal thread. The second protective ring 4 is threadedly connected to the second component 2 via a second anti-loosening external thread and a second anti-loosening internal thread. In some embodiments, the first protective ring 3 may abut against the second protective ring 4.

[0040] In some embodiments, since the first protective ring 3 abuts against the second protective ring 4, further tightening the first protective ring 3 or further tightening the second protective ring 4 can cause the first component 1 and the second component 2 to move away from each other in the axial direction, thereby making the gap between the threaded connection surfaces of the first component 1 and the second component 2 smaller or more closely fitted, thereby increasing the normal pressure at the threaded connection surfaces of the first component 1 and the second component 2, thereby increasing the friction of the threaded connection of the first component 1 and the second component 2, so that the threaded connection of the first component 1 and the second component 2 is tighter, and the connection between the first component 1 and the second component 2 is prevented from coming apart due to vibrations caused by left-hand or right-hand rotation.

[0041] In some embodiments, the first anti-loosening external thread of the first component 1 and the second anti-loosening external thread of the second component 2 have opposite helical directions.

[0042] In some embodiments, the first component 1 and the second component 2 are threaded together to form a rod-shaped integral. In this embodiment, when the first protective ring 3 rotates in a first direction (e.g., clockwise), the first protective ring 3 can move closer to the second protective ring 4 (e.g., move downward), and at the same time, when the second protective ring 4 rotates in the first direction (e.g., clockwise), the second protective ring 4 can move closer to the first protective ring 3 (e.g., move upward).

[0043] In some embodiments, the first component 1 and the second component 2 are threaded together to form a rod-shaped integral. In this embodiment, when the first protective ring 3 rotates in the second direction (e.g., counterclockwise), the first protective ring 3 can move closer to the second protective ring 4 (e.g., move downward), and at the same time, when the second protective ring 4 rotates in the second direction (e.g., counterclockwise), the second protective ring 4 can move closer to the first protective ring 3 (e.g., move upward).

[0044] In one or more embodiments of this specification, the first protective ring 3 and the second protective ring 4 are fixedly connected by fasteners to maintain the current position of the first protective ring 3 and the second protective ring 4, thereby maintaining the current friction of the threaded connection of the first component 1 and the second component 2 to maintain the current tightness of the first component 1 and the second component 2.

[0045] In some embodiments, the first protective ring 3 has one or more first through holes 31 along its axial direction. In some embodiments, the number of first through holes 31 may be multiple. In some embodiments, the first through holes 31 are arranged in a ring array relative to the axis of the first component 1 (or the axis of the second component 2).

[0046] In some embodiments, the second protective ring 4 has one or more second through slots 41 along its axial direction, and the second through slots 41 are arranged in an arc shape in the radial direction. In some embodiments, the number of second through slots 41 may be multiple. In some embodiments, the second through slots 41 are arranged in a ring array relative to the axis of the first component 1 (or the axis of the second component 2).

[0047] In some embodiments, the fastener passes through a first through hole 31 and a second through groove 41. In some embodiments, the fastener may include: a bolt 51 passing through the first through hole 31 and the second through groove 41, a nut 52 threadedly connected to the bolt 51, a washer 53 disposed between the nut 52 and the second protective ring 4, and a flat washer 54 disposed between the nut 52 and the washer 53. In this embodiment, the bolt 51 passes through the first through hole 31, the second through groove 41, the washer 53, and the flat washer 54 sequentially from top to bottom and is threadedly connected to the nut 52.

[0048] In other embodiments, the fastener may include: a bolt 51 passing through the first through hole 31 and the second through groove 41, a nut 52 threadedly connected to the bolt 51, a washer 53 disposed between the bolt head of the bolt 51 and the second protective ring 4, and a flat washer 54 disposed between the bolt head of the bolt 51 and the washer 53. In this embodiment, the bolt 51 passes through the flat washer 54, the washer 53, the second through groove 41, and the first through hole 31 in sequence from bottom to top and is threadedly connected to the nut 52.

[0049] In some embodiments, the washer 53 has the same shape as the second protective ring 4. In some embodiments, the washer 53 can be used to prevent the larger second through groove 41 from affecting the fastening of the fastener.

[0050] In some embodiments, the washer 53 includes a first washer 531 and a second washer 532, both of which are semi-annular. In some embodiments, the first washer 531 and the second washer 532 together form an annular ring.

[0051] In some embodiments, a through hole may be provided on the washer 53 for the bolt 51 to pass through.

[0052] It should be noted that in some applications, threads can be provided inside the through hole of washer 53 as needed. In some applications, threads can be provided inside the first through hole 31 as needed. In some applications, threads can be designed and provided on the inner wall of the second through groove 41 as needed.

[0053] In some embodiments, the first protective ring 3 protrudes from the outer surface of the first component 1, for example, the outer diameter of the first protective ring 3 is larger than the outer diameter of the first component 1. In some embodiments, the second protective ring 4 protrudes from the outer surface of the second component 2, for example, the outer diameter of the second protective ring 4 is larger than the outer diameter of the second component 2. The above arrangement facilitates the operator to use tools (e.g., wrenches or round bars) to achieve threaded fastening between the first protective ring 3 and the second protective ring 4 using fasteners.

[0054] In one or more embodiments of this specification, the first component 1 has a receiving space, and the second component 2 has a connecting portion 21 disposed inside the receiving space.

[0055] In some embodiments, the inner wall of the accommodating space of the first component 1 is threadedly connected to the outer wall of the connecting portion 21 of the second component 2.

[0056] In some embodiments, the connecting portion 21 of the second component 2 is frustoconical.

[0057] In some embodiments, the outer peripheral surface of the first component 1 is flush with the outer peripheral surface of the second component 2.

[0058] In one or more embodiments of this specification, the first component 1 and the second component 2 can be two components of a threaded connection with any anti-loosening requirement. In some use cases, one or more embodiments of this specification are applicable to mining equipment. Exemplarily, the first component 1 and the second component 2 can be a drill rig slewing head and a shock absorber. Exemplarily, the first component 1 and the second component 2 can be a shock absorber and a conversion joint.

[0059] In one or more embodiments of this specification, during use, after the first component 1 with the first protective ring 3 and the second component 2 with the second protective ring 4 are connected by the aforementioned main thread, the first protective ring 3 is screwed down and the second protective ring 4 is screwed up until the first protective ring 3 and the second protective ring 4 are tightly fitted together. In some embodiments, the first protective ring 3 has a plurality of first through holes 31 in the circumferential direction, and the second protective ring 4 has a plurality of first through grooves 41 in the circumferential direction. After the first protective ring 3 and the second protective ring 4 are tightly fitted together, bolts 51, nuts 52, washers 53, and flat washers 54 are used to secure the first protective ring 3 and the second protective ring 4 together.

[0060] In some embodiments, due to the use of the thread protection design in one or more embodiments of this specification, when the drill rig slewing head reverses to disassemble the drill rod located below the lower component, the connection of the main thread at that location will not be affected. The main thread will not loosen because it is protected by fasteners such as bolts 51, thus playing an anti-loosening role.

[0061] In some application scenarios, when the drill rig slewing head reverses to disassemble any component on the drill string chain other than the first component 1 and the second component 2, such as the drill pipe, the main thread between the first component 1 and the second component 2 may loosen. Due to the use of the drill string chain anti-loosening structure proposed in one or more embodiments of this specification, such as including the first protective ring 3, the second protective ring 4, and one or more components of the bolt 51, nut 52, and washer 53, the loosening of the main thread between the first component 1 and the second component 2 will not be aggravated, and there will be no situation where the main thread connection is disengaged, causing the connection between the first component 1 and the second component 2 to fail, thus playing a safety protection role.

[0062] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drill string chain anti-loosening structure, characterized in that, include: First component, second component, first protective ring, and second protective ring; The first component and the second component are threadedly connected; The first component has a first anti-loosening external thread, and the first protective ring has a first anti-loosening internal thread that matches the first anti-loosening external thread; The second component has a second anti-loosening external thread, and the second protective ring has a second anti-loosening internal thread that matches the second anti-loosening external thread.

2. The drill chain anti-loosening structure according to claim 1, characterized in that, The first anti-loosening external thread and the second anti-loosening external thread have opposite helical directions.

3. The drill chain anti-loosening structure according to claim 1, characterized in that, The first protective ring and the second protective ring are fixedly connected by fasteners.

4. The drill chain anti-loosening structure according to claim 3, characterized in that, The first protective ring has one or more first through holes along its axial direction; The second protective ring has one or more second through slots along its axial direction, and the second through slots are arc-shaped; The fastener passes through a second through slot and a first through hole.

5. The drill chain anti-loosening structure according to claim 4, characterized in that, The fastener includes: a bolt passing through the first through hole and the second through groove, a nut threadedly connected to the bolt, a washer disposed between the nut and the second protective ring, and a flat washer disposed between the nut and the washer; Alternatively, the fastener may include: a bolt passing through the first through hole and the second through slot, a nut threadedly connected to the bolt, a washer disposed between the bolt head and the second protective ring, and a flat washer disposed between the bolt head and the washer.

6. The drill chain anti-loosening structure according to claim 5, characterized in that, The washer has the same shape as the second protective ring.

7. The drill chain anti-loosening structure according to claim 6, characterized in that, The washer includes a first washer and a second washer, both of which are semi-circular.

8. The drill chain anti-loosening structure according to claim 1, characterized in that, The first protective ring abuts against the second protective ring.

9. The drill chain anti-loosening structure according to claim 1, characterized in that, The first component has a receiving space, and the second component has a connecting portion, which is disposed inside the receiving space; The inner wall of the accommodating space of the first component is threadedly connected to the outer wall of the connecting portion of the second component.

10. The drill chain anti-loosening structure according to claim 9, characterized in that, The connecting portion of the second component is frustoconical; The outer peripheral surface of the first component is flush with the outer peripheral surface of the second component.

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