Anti-loosening assembly and electric connection structure

Abstract

The utility model relates to the technical field of electric power systems, and discloses an anti-loosening assembly and an electric connection structure. The anti-loosening assembly comprises a first connecting piece and a second connecting piece. The first connecting piece is provided with taper pipe inner threads; the second connecting piece is provided with taper pipe external threads matched with the taper pipe internal threads, the taper pipe external threads of the second connecting piece are used for being screwed in or screwed out of the taper pipe internal threads of the first connecting piece, and the second connecting piece is in threaded connection with the first connecting piece. Through the design of the taper threads, compared with straight threads and the taper threads, the pressure distribution between thread contact surfaces can be more uniform in the screwing-in process, the actual contact area between the threads can be increased, so that the friction force is improved, and due to the fact that the taper threads have the self-locking characteristic, when the anti-loosening assembly of the structure is used, the anti-loosening effect is better. And a good anti-loosening effect can be kept under the condition of no additional locking structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to power system technical field, concretely relates to a loosening prevention assembly and electric connection structure. BACKGROUND

[0002] In the field of power system, screws, bolts and other connecting pieces are widely used in the connection between wires, the installation of equipment and the fixation between electrical joints. The stability of such connection structure is directly related to the safety and reliability of electrical system.

[0003] In the prior art, the screw loosening problem is mainly reinforced from the aspect of mechanical structure. For example, a spring washer is used to enhance the fastening degree of the connecting node.

[0004] However, since the thread used at the connecting node is usually a straight thread, the vibration generated during the operation of the equipment will make the spacing between the contact surfaces at the threaded connection have a tendency to increase. After a period of time, the screw will loosen, resulting in a decrease in the effective pressure between the contact surfaces at the threaded connection, and thus an increase in the resistance of the contact surface. According to Joule's law (Q=I 2 Rt), the increased contact resistance will cause abnormal heating when the local current passes through, forming a high-temperature environment. The continuous high-temperature environment will accelerate the aging speed of the insulation materials of the equipment (such as epoxy resin, polyimide, etc.), resulting in a decrease in insulation performance or even breakdown, and thus causing electric leakage or short circuit or even electrical fire. More seriously, the continuous high-temperature environment can cause the screw itself to fuse, and the molten material reacts with oxygen in the air to form a high-resistance oxide layer (such as copper oxide, iron oxide), further aggravating the poor contact, forming a vicious cycle. In addition, screw loosening can cause fluctuations in the contact area between phase conductors, inducing arc discharge or transient open circuit, causing voltage instability, short circuit and other power transmission faults. SUMMARY

[0005] Therefore, the utility model provides a loosening prevention assembly and electric connection structure to solve the problem of loosening at the electric connection node of the power system.

[0006] In a first aspect, the utility model provides a loosening prevention assembly, which comprises a first connecting piece and a second connecting piece. The first connecting piece is provided with a tapered pipe internal thread; the second connecting piece is provided with a tapered pipe external thread adapted to the tapered pipe internal thread, the tapered pipe external thread of the second connecting piece is used to screw into or out of the tapered pipe internal thread of the first connecting piece, and the second connecting piece is threadedly connected with the first connecting piece.

[0007] Beneficial effects: the taper pipe internal thread and the taper pipe external thread are both taper threads, through the design of the taper threads, compared with straight threads, the taper threads can make the pressure distribution between the thread contact surfaces more uniform during screwing, which helps to increase the actual contact area between the threads, thereby improving the friction force, and due to the self-locking characteristics of the taper threads, when the anti-loosening assembly using the structure is used, the anti-loosening effect can be maintained well without additional locking structures, which can improve the anti-loosening performance of the connection node, thereby avoiding the increase of the resistance at the connection node, and thus improving the high temperature environment prone to occur when using straight threads, the performance decline or even breakdown of the insulation material due to the accelerated aging of the high temperature environment, and the short circuit or even electrical fire caused by the short circuit, the poor contact caused by the melting of the screw itself due to the high temperature environment to form a high resistance oxide layer, and the voltage instability or short circuit caused by arc discharge or transient short circuit.

[0008] In an optional embodiment, the first connecting piece is further provided with a straight pipe external thread; the anti-loosening assembly further comprises a fastener, the fastener is provided with a straight pipe internal thread matched with the straight pipe external thread, and the fastener is threadedly connected with the first connecting piece.

[0009] Beneficial effects: by adding the fastener and threadedly connecting the fastener with the first connecting piece through the straight pipe external thread and the straight pipe internal thread, even if the taper thread part is loose, the fastener can still provide additional fixing capacity for the taper thread part, further improving the anti-loosening performance of the connection node.

[0010] In an optional embodiment, the taper pipe internal thread of the first connecting piece is provided with a first abutting portion at an end axially away from the second connecting piece, the taper pipe external thread of the second connecting piece is provided with a second abutting portion at an end axially away from the first connecting piece, and the fastener is located axially between the first abutting portion and the second abutting portion.

[0011] In an optional embodiment, two fasteners are provided, the two fasteners are arranged in a stacked manner along the axial direction, and when both of the fasteners are installed in place, the two fasteners are reversely screwed.

[0012] Beneficial effects: when both of the fasteners are installed in place, by reversely screwing the two fasteners, that is, one fastener is screwed in the clockwise direction and the other fastener is screwed in the counterclockwise direction, mutual locking is achieved, and even if impact or vibration load occurs, continuous pressure exists between the two fasteners, wear and fatigue damage caused by slight movement are reduced, and thus the anti-loosening effect of the anti-loosening assembly is improved. At the same time, even if one of the fasteners fails to fasten, the other can still maintain the fastening, thereby improving the reliability of the anti-loosening assembly.

[0013] In an alternative embodiment, the rigid anti-loosening member is sleeved outside the external thread of the straight pipe, and is arranged at least at the fastener in the axial direction to limit axial movement of the fastener when the fastener is installed in place.

[0014] Beneficial effects: By adding a rigid anti-loosening member, the axial movement of the fastener can be limited, which helps to further improve the loosening phenomenon of the fastener caused by vibration, impact or other external actions, and improve the reliable anti-loosening performance. At the same time, the rigid anti-loosening member can assist in uniformly distributing the pre-tightening force applied by the fastener, avoiding local stress concentration and reducing the risk of failure caused by uneven stress.

[0015] In an alternative embodiment, the rigid anti-loosening member is provided in pairs, and the pair of rigid anti-loosening members are respectively arranged in the axial direction between the fastener and the end face of the first conductor away from the second conductor, and between the first abutting portion and the end face of the second conductor away from the first conductor.

[0016] Beneficial effects: By providing rigid anti-loosening members at key positions, i.e., between the fastener and the end face of the first conductor away from the second conductor, and between the first abutting portion and the end face of the second conductor away from the first conductor, the loosening of either conductor is avoided, and the stress on the conductors is uniform, which can provide a reliable connection relationship for the electrical connection of the first conductor and the second conductor.

[0017] In an alternative embodiment, the anti-loosening assembly further comprises an elastic anti-loosening member, which is sleeved outside the external thread of the straight pipe, and is arranged in the axial direction between the rigid anti-loosening member at the end face of the first conductor away from the second conductor and the fastener to provide an axial pre-tightening force.

[0018] Beneficial effects: By arranging an elastic anti-loosening member between the rigid anti-loosening member at the end face of the first conductor away from the second conductor and the fastener, the elastic anti-loosening member can store energy and disperse stress during installation, generating a friction force between the fastener and the rigid anti-loosening member to further prevent the fastener from loosening due to vibration. That is, during the gradual tightening of the fastener, the elastic anti-loosening member provides a continuous pre-tightening force to the rigid anti-loosening member, which helps to stably press the first conductor and further stably press the second conductor, so that the first conductor and the second conductor can maintain a good contact state during long-term use or under the influence of external vibration.

[0019] In an alternative embodiment, the first connecting member is further provided with a long strip-shaped gap penetrating the internal thread of the taper pipe and the external thread of the straight pipe in the radial direction, and the long strip-shaped gap extends in the axial direction.

[0020] Beneficial effects: By providing an axially extending notch that penetrates both the internal thread of the tapered tube and the external thread of the straight tube, during the threaded connection process, the internal thread of the tapered tube engages with the external thread of the tapered tube, causing the diameter of the internal thread of the tapered tube to tend to increase. This increases the pressure at the threaded connection of the first and second connecting parts, thereby achieving the purpose of preventing loosening.

[0021] Secondly, this utility model also provides an electrical connection structure, including a first conductor, a second conductor, and the anti-loosening component mentioned in the first aspect. Wherein, one of the second conductor and the first conductor is an electrical connection terminal of an electrical device, and the other is an electrical connection terminal of a power transmission device. The anti-loosening component is used to electrically connect the second conductor and the first conductor.

[0022] Beneficial effects: Since the electrical connection structure includes anti-loosening components, it has the same effect as anti-loosening components, which will not be elaborated here.

[0023] In one alternative embodiment, the first conductor and the second conductor are stacked axially. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of the first connector in the anti-loosening assembly provided by this utility model;

[0026] Figure 2 A schematic diagram of the structure of the second connector in the anti-loosening assembly provided by this utility model;

[0027] Figure 3 A schematic diagram of the fastener structure in the anti-loosening component provided by this utility model;

[0028] Figure 4 A schematic diagram of the electrical connection structure provided by this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. First connecting part; 11. Tapered pipe internal thread; 12. Straight pipe external thread; 13. First abutment part; 14. Long strip notch;

[0031] 2. Second connecting piece; 21. Tapered tube external thread; 22. Second abutment part;

[0032] 3. Fasteners; 31. Straight pipe internal threads;

[0033] 4. Rigid anti-loosening components;

[0034] 5. Elastic anti-loosening components;

[0035] 6. First conductor;

[0036] 7. Second conductor. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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 utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0042] In existing technologies, the problem of loose screws is mainly addressed by reinforcing the mechanical structure. For example, spring washers are used to enhance the tightness of the connection points.

[0043] However, since the threads used at the connection points are often straight threads, the vibration generated during equipment operation will cause the gap between the contact surfaces at the threaded connection to tend to increase, and after a period of time, the screws will loosen.

[0044] Specifically, vibration causes minute movements between the threads, resulting in fretting wear. This reduces the friction between the bolt and the threaded hole, decreasing its tightening effect. Continuous vibration causes relative rotation between the bolt and the threaded hole, which, over time, causes the screw to slowly loosen.

[0045] If the screws are not tightened in time, the effective pressure between the contact surfaces at the threaded connection will decrease, leading to an increase in the resistance of the contact surfaces. According to Joule's law (Q = I), 2 Increased contact resistance (Rt) can cause abnormal heating when local current passes through, creating a high-temperature environment.

[0046] Sustained high temperatures accelerate the aging of equipment insulation materials (such as epoxy resin and polyimide), leading to decreased insulation performance or even breakdown, which can cause leakage, short circuits, or even electrical fires. More seriously, sustained high temperatures can cause the screws themselves to melt, and the molten material reacts with oxygen in the air to form a high-resistivity oxide layer (such as copper oxide or iron oxide), further exacerbating poor contact and creating a vicious cycle. Furthermore, loose screws can cause fluctuations in the contact area between phase conductors, inducing arcing or momentary circuit breaks, resulting in voltage instability, short circuits, and other power transmission failures.

[0047] Therefore, this application improves the straight thread to a tapered thread and uses fasteners 3, rigid anti-loosening parts 4, and elastic anti-loosening parts 5 to tighten the contact portion between the threads.

[0048] The following is combined with Figures 1 to 4 The following describes embodiments of the present invention.

[0049] According to an embodiment of the present invention, in a first aspect, an anti-loosening component is provided.

[0050] like Figures 1 to 3 As shown, the anti-loosening component includes a first connector 1 and a second connector 2.

[0051] The first connector 1 is provided with a tapered tube internal thread 11; the second connector 2 is provided with a tapered tube external thread 21 adapted to the tapered tube internal thread 11. The second connector 2 is threadedly connected to the first connector 1. The tapered tube external thread 21 of the second connector 2 is used to screw into the tapered tube internal thread 11 of the first connector 1 to gradually press the contact surface at the threaded connection until the first connector 1 is fixed, or to unscrew the tapered tube internal thread 11 of the first connector 1 and gradually loosen the contact surface at the threaded connection until the tapered tube external thread 21 disengages from the tapered tube internal thread 11.

[0052] With this configuration, both the internal thread 11 and the external thread 21 of the tapered tube are tapered threads. Compared to straight threads, tapered threads allow for a more uniform pressure distribution between the thread contact surfaces during screwing, which helps to increase the actual contact area between the threads and thus improve friction.

[0053] Furthermore, due to the self-locking property of the tapered thread, the anti-loosening component of this structure can maintain a good anti-loosening effect even without an additional locking structure, thereby improving the anti-loosening performance of the connection node.

[0054] To avoid increased resistance at connection points, this improves the situation where straight threads are prone to high-temperature environments, where insulation materials age faster due to high temperatures, leading to performance degradation or even breakdown and causing short circuits or electrical fires, where screws themselves melt due to high temperatures, forming a high-resistance oxide layer and resulting in poor contact, and where arc discharge or instantaneous short circuits cause voltage instability or other power transmission faults.

[0055] It can be noted that in this embodiment, the first connector 1 is preferably a common bolt with a tapered internal thread 11 on its shaft, and the second connector 2 is preferably a tapered bolt.

[0056] It can be noted that, in order to further reinforce the threaded connection of the first connector 1 and the second connector 2, the first connector 1 is also provided with a straight pipe external thread 12; at this time, the anti-loosening component also includes a fastener 3, which is provided with a straight pipe internal thread 31 that is adapted to the straight pipe external thread 12, and the fastener 3 is threadedly connected to the first connector 1.

[0057] With this configuration, by adding a fastener 3 and connecting the fastener 3 to the first connector 1 through a straight pipe external thread 12 and a straight pipe internal thread 31, even if the tapered thread part becomes loose, the fastener 3 can still provide additional fixing capacity for the tapered thread, further improving the anti-loosening performance at the connection node.

[0058] Preferably, fastener 3 is selected as a nut.

[0059] In one embodiment, the tapered tube internal thread 11 of the first connector 1 is provided with a first abutting portion 13 along the axial direction away from the end of the second connector 2, and the tapered tube external thread 21 of the second connector 2 is provided with a second abutting portion 22 along the axial direction away from the end of the first connector 1; the fastener 3 is located between the first abutting portion 13 and the second abutting portion 22 along the axial direction.

[0060] Preferably, the first abutting part 13 is located at the head of the first connecting member 1, and the second connecting part is located at the head of the second connecting member 2.

[0061] During installation, the shaft of the first connector 1 is screwed into the shaft of the second connector 2, and the outer wall of the shaft of the second connector 2 is secured with fasteners 3.

[0062] It should be noted that, in this embodiment, the number of fasteners 3 is not specifically limited. There can be one, two or more.

[0063] Preferably, the number of fasteners 3 is at least two, wherein two fasteners 3 are used to install between the heads of the first conductor 6 and the second connector 2.

[0064] During installation, two of the fasteners 3 are stacked along the axial direction.

[0065] Furthermore, when both fasteners 3 are in place, the two fasteners 3 are tightened in opposite directions.

[0066] With this setup, when both fasteners 3 are installed in place, the two fasteners 3 are then tightened in opposite directions until their facing end faces come into contact. That is, when one fastener 3 is tightened clockwise, the other fastener 3 is tightened counterclockwise, thus achieving mutual locking.

[0067] During use, even under impact or vibration loads, there is still continuous pressure between the two fasteners 3, which reduces wear and fatigue damage caused by minute movements, thereby improving the anti-loosening effect of the anti-loosening component.

[0068] At the same time, even if one of the fasteners 3 fails to tighten, the other will remain fixed, thereby improving the reliability of the anti-loosening component.

[0069] To further improve the anti-loosening effect, a rigid anti-loosening component 4 is added. At this time, the rigid anti-loosening component 4 is sleeved on the outside of the straight pipe external thread 12, and the rigid anti-loosening component 4 is installed at least at the fastener 3 along the axial direction to restrict the axial movement of the fastener 3 when the fastener 3 is installed in place.

[0070] This configuration, by adding a rigid anti-loosening component 4, can limit the axial movement of the fastener 3, which helps to further improve the phenomenon of fastener 3 loosening due to vibration, impact or other external forces, and improve the reliable anti-loosening performance.

[0071] Meanwhile, the rigid anti-loosening component 4 can help to evenly distribute the pre-tightening force applied by the fastener 3, avoid local stress concentration, and reduce the risk of failure caused by uneven force.

[0072] Preferably, the rigid anti-loosening component 4 is selected as a flat washer.

[0073] In one embodiment, a pair of rigid anti-loosening members 4 are provided, and the pair of rigid anti-loosening members 4 are respectively installed along the axial direction between the fastener 3 and the end face of the first conductor 6 away from the second conductor 7, and between the first abutment portion 13 and the end face of the second conductor 7 away from the first conductor 6.

[0074] With this configuration, by providing rigid anti-loosening components 4 at key locations, that is, by providing rigid anti-loosening components 4 between the fastener 3 and the end face of the first conductor 6 away from the second conductor 7, and between the first abutment portion 13 and the end face of the second conductor 7 away from the first conductor 6, it is possible to prevent any conductor from becoming loose, and the conductors are subjected to uniform force, which can provide a reliable connection relationship for the electrical connection between the first conductor 6 and the second conductor 7.

[0075] It can be noted that, in order to further improve the anti-loosening effect, the anti-loosening component also includes an elastic anti-loosening element 5. The elastic anti-loosening element 5 is sleeved on the outside of the straight pipe external thread 12, and the elastic anti-loosening element 5 is installed axially between the rigid anti-loosening element 4 and the fastener 3 at the end face of the first conductor 6 away from the second conductor 7, in order to provide axial preload.

[0076] With this configuration, an elastic anti-loosening element 5 is installed between the rigid anti-loosening element 4 and the fastener 3 at the end face of the first conductor 6 away from the second conductor 7. During installation, the elastic anti-loosening element 5 can store energy and distribute stress, generating friction between the fastener 3 and the rigid anti-loosening element 4, further preventing the fastener 3 from loosening due to vibration.

[0077] That is, during the process of gradually tightening the fastener 3, the elastic anti-loosening element 5 provides a continuous pre-tightening force to the rigid anti-loosening element 4, which helps the rigid anti-loosening element 4 to stably press the first conductor 6, and then stably press the second conductor 7, so that the first conductor 6 and the second conductor 7 can maintain a good contact state during long-term use or when affected by external vibration.

[0078] Preferably, the elastic anti-loosening component 5 is a spring washer.

[0079] In one embodiment, the first connector 1 is further provided with an elongated notch 14 that runs radially through its tapered internal thread 11 and straight external thread 12, and the elongated notch 14 extends axially.

[0080] With this configuration, by providing an axially extending notch 14 that penetrates the tapered tube internal thread 11 and the straight tube external thread 12, during the threaded connection process, the tapered tube internal thread 11 and the tapered tube external thread 21 cooperate, causing the diameter of the tapered tube internal thread 11 to tend to increase, thereby increasing the pressure at the threaded connection of the first connector 1 and the second connector 2, achieving the purpose of preventing loosening.

[0081] It can be noted that, in this embodiment, the length of the elongated notch 14 after axial projection is less than or equal to the length of the rod body after axial projection.

[0082] Preferably, the length of the elongated notch 14 after axial projection is the same as the length of the rod body after axial projection.

[0083] For example, the length of the elongated notch 14 after projection in the axial direction is 6.5 cm.

[0084] According to an embodiment of the present invention, an electrical connection structure is also provided.

[0085] like Figure 4 As shown, the electrical connection structure includes a first conductor 6, a second conductor 7, and an anti-loosening component as described in the first aspect. One of the second conductor 7 and the first conductor 6 is the electrical connection terminal of the electrical equipment, and the other is the electrical connection terminal of the power transmission equipment. The second conductor 7 and the first conductor 6 are electrically connected through the anti-loosening component.

[0086] That is, the first conductor 6 and the second conductor 7 are connected using a first connector 1, a second connector 2, at least one fastener 3, at least one pair of rigid anti-loosening elements 4, and at least one elastic anti-loosening element 5.

[0087] Preferably, such as Figure 4 As shown, the electrical connection node is provided with two fasteners 3, two rigid anti-loosening parts 4, and one elastic anti-loosening part 5.

[0088] During installation, both the first conductor 6 and the second conductor 7 have coaxially arranged through holes. The first conductor 6 and the second conductor 7 are stacked axially, and the two through holes are coaxial. A rigid anti-loosening component 4 is then fitted onto the outside of the first connector 1, and the rigid anti-loosening component 4 is positioned at the head of the first connector 1. The first connector 1 is then held and inserted through the through holes of the second conductor 7 and the second conductor 7 in sequence until the end of the first connector 1 abuts against the rigid anti-loosening component 4 at the head of the first connector 1. Another rigid anti-loosening component 4 and an elastic anti-loosening component 5 are then fitted onto the outside of the first connector 1, and placed on the end face of the first conductor 6 away from the second conductor 7 along the stacking direction. Two fasteners 3 are then screwed onto the outside of the first connector 1 in sequence. After the two fasteners 3 are in place, they are tightened again in opposite directions.

[0089] It can be noted that the axes of the first connector 1, the second connector 2, the rigid anti-loosening component 4, the elastic anti-loosening component 5, the through hole of the first conductor 6, and the through hole of the second conductor 7 mentioned in the above embodiments are all the same central axis. Therefore, the axial direction mentioned in the above embodiments is the axial direction of this central axis, and the radial direction mentioned in the above embodiments is the radial direction of this central axis.

[0090] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An anti-loosening component, characterized in that, include: The first connector (1) is provided with a tapered tube internal thread (11); The second connector (2) is provided with a tapered tube external thread (21) adapted to the tapered tube internal thread (11). The tapered tube external thread (21) of the second connector (2) is used to screw into or out of the tapered tube internal thread (11) of the first connector (1). The second connector (2) is threadedly connected to the first connector (1).

2. The anti-loosening component according to claim 1, characterized in that, The first connector (1) is also provided with a straight pipe external thread (12); The anti-loosening component also includes a fastener (3), which has a straight pipe internal thread (31) adapted to the straight pipe external thread (12) and is threadedly connected to the first connector (1).

3. The anti-loosening component according to claim 2, characterized in that, The tapered tube internal thread (11) of the first connector (1) is provided with a first abutting part (13) along the axial direction away from the end of the second connector (2), and the tapered tube external thread (21) of the second connector (2) is provided with a second abutting part (22) along the axial direction away from the end of the first connector (1). The fastener (3) is located axially between the first abutment (13) and the second abutment (22).

4. The anti-loosening component according to claim 3, characterized in that, Two fasteners (3) are provided, and the two fasteners (3) are stacked along the axial direction. When both fasteners (3) are installed in place, the two fasteners (3) are tightened in opposite directions.

5. The anti-loosening component according to claim 3, characterized in that, Also includes: A rigid anti-loosening component (4) is sleeved on the outside of the straight pipe external thread (12). The rigid anti-loosening component (4) is installed at least axially at the fastener (3) to restrict the axial movement of the fastener (3) when the fastener (3) is installed in place.

6. The anti-loosening component according to claim 5, characterized in that, The rigid anti-loosening component (4) is provided in pairs, and the pair of rigid anti-loosening components (4) are respectively installed along the axial direction between the fastener (3) and the end face of the first conductor (6) away from the second conductor (7) and between the end face of the first abutment (13) and the second conductor (7) away from the first conductor (6).

7. The anti-loosening component according to claim 6, characterized in that, Also includes: An elastic anti-loosening element (5) is sleeved on the outside of the straight pipe external thread (12), and the elastic anti-loosening element (5) is installed axially between the rigid anti-loosening element (4) and the fastener (3) at the end face of the first conductor (6) away from the second conductor (7) to provide axial preload.

8. The anti-loosening component according to any one of claims 2-7, characterized in that, The first connector (1) is also provided with an elongated notch (14) that runs radially through its tapered internal thread (11) and straight external thread (12), and the elongated notch (14) extends axially.

9. An electrical connection structure, characterized in that, include: First conductor (6); The second conductor (7) and the first conductor (6) are either electrical connection terminals of the electrical equipment or electrical connection terminals of the power transmission equipment. The anti-loosening component is the anti-loosening component according to any one of claims 1-8, and the anti-loosening component is used to electrically connect the second conductor (7) and the first conductor (6).

10. The electrical connection structure according to claim 9, characterized in that, The first conductor (6) and the second conductor (7) are stacked along the axial direction.

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