Screw fastening anti-loosening device for electrical equipment

Abstract

The utility model relates to an electrical equipment screw fastening anti-loosing device, which belongs to the technical field of screw fastening anti-loosing devices and comprises a screw body, a supporting round piece arranged on the periphery of the screw body, a fixing seat arranged on the periphery of the screw body, a nut fixedly connected with the top of the screw body, and a screw rod fixedly connected with the nut. The bottom of the supporting round piece is fixedly connected with a plurality of mounting bases, and the interiors of the mounting bases are rotationally connected with rotating shafts. The anti-loosening screw has the advantages that when the screw of the electrical equipment is used, a worker can install the fixing base on the specified electrical equipment, at the moment, due to the use of the torsion spring, the anti-loosening piece can have certain elasticity and cannot affect the rotating screw body, and then the anti-loosening piece can be prevented from loosening due to the counter-acting force of the torsion spring. The anti-loosening piece can be pushed to rotate, then the anti-loosening piece can abut against the thread position of the screw body, and the phenomenon that the screw body rotates reversely or loosens can be prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of screw fastening and anti-loosening devices, and in particular to a screw fastening and anti-loosening device for electrical equipment. Background Technology

[0002] Electrical equipment such as transformers, reactors, and arc suppression coils vibrate during operation, causing the fastening and anti-loosening structures to gradually loosen. This leads to increased noise, intensified vibration, and even equipment malfunctions. The reliability of screw connections directly affects the safety and stability of electrical equipment during installation and operation.

[0003] Currently, the industry widely adopts the fastening method of ordinary nuts and spring washers. However, the threaded connection between nuts and bolts is maintained by friction. Under the continuous vibration generated by the operation of equipment, the contact stress on the metal surface gradually decreases, causing a slight displacement of the connection. This displacement accumulation will cause gaps between the connecting parts, increasing the contact resistance of electrical contacts. In severe cases, it can cause local overheating or even arcing. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the main purpose of this utility model is to provide a screw fastening and anti-loosening device for electrical equipment.

[0005] The technical solution of this utility model is as follows: an electrical equipment screw fastening and anti-loosening device includes a screw body, a supporting circular component is provided on the outer periphery of the screw body, a fixing seat is provided on the outer periphery of the screw body, the fixing seat is fixedly connected to the supporting circular component, a nut is fixedly connected to the top of the screw body, and several mounting seats are fixedly connected to the bottom of the supporting circular component. A rotating shaft is rotatably connected inside each mounting seat, and an anti-loosening component is fixedly connected to the outer side of each rotating shaft. A torsion spring is sleeved on the outer side of the rotating shaft and on both sides of the anti-loosening component, and the end of the anti-loosening component away from the mounting seat abuts against the thread of the screw body.

[0006] In a preferred embodiment, the fixed base is provided with an anti-slip component, which includes two sliding grooves formed inside the fixed base. Sliding members are slidably connected inside the sliding grooves, and limiting members are fixedly connected to the sides of the two sliding members that are close to each other.

[0007] In a preferred embodiment, the anti-slip assembly further includes a spring sleeved on the outer periphery of the fixed rod, the nut has a limiting groove inside for use with the nut, and the fixed rod is slidably connected to the corresponding sliding member.

[0008] In a preferred embodiment, both the mounting base and the anti-loosening component are fixedly connected to a fixing block on their outer sides, and both ends of the torsion spring overlap with the fixing block.

[0009] In a preferred embodiment, the limiting members are engaged with the inner wall of the limiting groove, and the spring abuts against the sliding member and the inner wall of the groove.

[0010] In a preferred embodiment, mounting plates are fixedly connected to both sides of the fixing base, and mounting holes are provided inside the mounting plates.

[0011] In a preferred embodiment, the two grooves are respectively disposed on both sides of the nut, and the outer side of the nut is provided with an anti-oxidation coating.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, when using screws for electrical equipment, the worker can install the fixing seat on the designated electrical equipment. At this time, due to the use of torsion spring, the anti-loosening part has a certain elasticity and will not affect the rotating screw body. Subsequently, through the reaction force of the torsion spring, the anti-loosening part can be pushed to rotate, and then the anti-loosening part can be used to resist the thread of the screw body, which can prevent the screw body from reversing or loosening.

[0014] 2. In this utility model, by moving two sliding parts toward each other, the limiting part can be moved, thereby achieving the purpose of clamping the nut with the help of the limiting part. At the same time, by setting the limiting groove, the nut can be limited, preventing the nut and screw body from falling off during long-term vibration of electrical equipment, and further improving the anti-loosening effect of the screw body. Attached Figure Description

[0015] Figure 1 This utility model provides an overall perspective view of an electrical equipment screw fastening and anti-loosening device;

[0016] Figure 2 This utility model provides a top view of an electrical equipment screw fastening and anti-loosening device;

[0017] Figure 3 This utility model provides a bottom view of an electrical equipment screw fastening and anti-loosening device;

[0018] Figure 4 This utility model provides an electrical equipment screw fastening and anti-loosening device. Figure 3 Enlarged view of point A in the middle.

[0019] Legend: 1. Screw body; 2. Nut; 3. Limiting groove; 4. Fixing base; 5. Limiting component; 6. Sliding component; 7. Mounting plate; 8. Supporting round component; 9. Slide groove; 10. Fixing rod; 11. Spring; 12. Mounting base; 13. Torsion spring; 14. Anti-loosening component; 15. Shaft. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] Reference Figure 1-4 An anti-loosening device for electrical equipment screws includes a screw body 1, a supporting circular member 8 on the outer periphery of the screw body 1, a fixing seat 4 on the outer periphery of the screw body 1, the fixing seat 4 being fixedly connected to the supporting circular member 8, a nut 2 being fixedly connected to the top of the screw body 1, and several mounting seats 12 being fixedly connected to the bottom of the supporting circular member 8. A rotating shaft 15 is rotatably connected inside each mounting seat 12, and an anti-loosening member 14 is fixedly connected to the outer side of each rotating shaft 15. Torsion springs 13 are sleeved on both sides of the rotating shaft 15 and the anti-loosening member 14 to prevent loosening. The end of component 14 away from the mounting base 12 abuts against the thread of the screw body 1. When using electrical equipment screws, the operator can install the mounting base 4 on the designated electrical equipment. At this time, due to the use of torsion spring 13, the anti-loosening component 14 has a certain elasticity and will not affect the rotating screw body 1. Subsequently, through the reaction force of torsion spring 13, the anti-loosening component 14 can be pushed to rotate, and thus the anti-loosening component 14 can abut against the thread of the screw body 1, which can prevent the screw body 1 from reversing or loosening.

[0022] Specifically, the fixing base 4 is internally equipped with an anti-slip component, which includes two sliding grooves 9 formed inside the fixing base 4. Sliding members 6 are slidably connected inside the sliding grooves 9. The two sliding members 6 move towards each other, thereby driving the limiting member 5 to move. This limiting member 5 then clamps the nut 2. Simultaneously, the limiting groove 3 limits the nut 2, preventing the nut 2 and screw body 1 from falling off during long-term vibration of the electrical equipment, further improving the anti-loosening effect of the screw body 1. As a result, the two sliding parts 6 are fixedly connected to the side of each other. The anti-slip assembly also includes a spring 11 sleeved on the outer periphery of the fixed rod 10. The nut 2 has a limiting groove 3 inside that works with the nut 2. The fixed rod 10 is slidably connected to the corresponding sliding part 6. Through the elastic force of the spring 11, the sliding part 6 can be pushed to slide on the fixed rod 10, which in turn can drive the limiting part 5 to move. The mounting base 12 and the anti-loosening part 14 are both fixedly connected to the outer side of the fixed block. The two ends of the torsion spring 13 are both connected to the fixed block.

[0023] Specifically, the limiting components 5 are engaged with the inner wall of the limiting groove 3 to improve the clamping and fixing effect. The spring 11 abuts against the inner wall of the sliding component 6 and the slide groove 9. Mounting plates 7 are fixedly connected to both sides of the fixing seat 4. Mounting plates 7 are provided with mounting holes inside to facilitate the installation of the fixing seat 4 on electrical equipment. The two slide grooves 9 are respectively set on both sides of the nut 2. The outer side of the nut 2 is provided with an anti-oxidation coating to improve the anti-oxidation effect of the nut 2.

[0024] Working principle: First, when using screws on electrical equipment, the operator can install the fixing base 4 on the designated electrical equipment. At this time, due to the use of torsion spring 13, the anti-loosening part 14 has a certain elasticity and will not affect the rotating screw body 1. Subsequently, through the reaction force of torsion spring 13, the anti-loosening part 14 can be pushed to rotate, and then the anti-loosening part 14 can be used to resist the thread of the screw body 1, which can prevent the screw body 1 from reversing or loosening. Through the elastic force of spring 11, the sliding part 6 can be pushed to slide on the fixing rod 10, and then the two sliding parts 6 can move towards each other, thereby driving the limiting part 5 to move, and thus the limiting part 5 can be used to achieve the purpose of clamping the nut 2. At the same time, through the setting of the limiting groove 3, the nut 2 can be limited, preventing the nut 2 and screw body 1 from falling off during long-term vibration of the electrical equipment, which can further improve the anti-loosening effect of the screw body 1.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An anti-loosening device for screw fastening of an electrical equipment, comprising a screw body (1), characterized in that: The screw body (1) is provided with a support round part (8) on its outer periphery and a fixing seat (4) on its outer periphery. The fixing seat (4) is fixedly connected to the support round part (8). The top of the screw body (1) is fixedly connected to a nut (2). The bottom of the support round part (8) is fixedly connected to several mounting seats (12). The mounting seats (12) are all rotatably connected to a rotating shaft (15). The outer side of the rotating shaft (15) is fixedly connected to an anti-loosening part (14). The outer side of the rotating shaft (15) and both sides of the anti-loosening part (14) are fitted with torsion springs (13). The end of the anti-loosening part (14) away from the mounting seat (12) abuts against the thread of the screw body (1).

2. An electrical device screw fastening anti-loosening device according to claim 1, characterized in that: The fixed base (4) is provided with an anti-slip component inside. The anti-slip component includes two sliding grooves (9) opened inside the fixed base (4). Sliding members (6) are slidably connected inside the sliding grooves (9). Limiting members (5) are fixedly connected to the side of the two sliding members (6) that are close to each other.

3. An electrical device screw fastening anti-loosening device according to claim 2, characterized in that: The anti-slip assembly also includes a spring (11) sleeved on the outer periphery of the fixed rod (10), and the inside of the nut (2) is provided with a limiting groove (3) that cooperates with the nut (2). The fixed rod (10) is slidably connected to the corresponding sliding member (6).

4. An electrical device screw fastening anti-loosening device according to claim 1, characterized in that: The mounting base (12) and the anti-loosening component (14) are both fixedly connected to the outer side of the fixing block, and both ends of the torsion spring (13) are connected to the fixing block.

5. An electrical device screw fastening anti-loosening device according to claim 3, characterized in that: The limiting member (5) is engaged with the inner wall of the limiting groove (3), and the spring (11) abuts against the inner wall of the sliding member (6) and the sliding groove (9).

6. An electrical device screw fastening anti-loosening device according to claim 1, characterized in that: Mounting plates (7) are fixedly connected to both sides of the fixed base (4), and mounting holes are provided inside the mounting plates (7).

7. An electrical device screw fastening anti-loosening device according to claim 2, characterized in that: The two grooves (9) are respectively provided on both sides of the nut (2), and the outer side of the nut (2) is provided with an anti-oxidation coating.

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