Anti-loosening nested structure of insulating nut

Abstract

The utility model discloses an anti-loosening nested structure of insulating nut relates to insulating nut anti-loosening structure technical field. An anti-loosening nested structure of insulating nut, include: insulating nut main part, the inside of insulating nut main part is provided with internal thread, the upper end of insulating nut main part is provided with first nest, the upper end of first nest is provided with second nest, anti-loosening component, anti-loosening component is located between first nest and second nest. The solution has some insulating nuts, does not have the anti-loosening structure, and is easy to loosen under the vibration environment and fails, and the sustained vibration of electrical equipment operation or the shaking of outdoor line affected by wind force can lead to the gradual attenuation of the thread connection pre-tightening force of nut and bolt, and due to the low friction coefficient of insulating material surface and the lack of effective locking structure, the nut is easy to rotate relatively with vibration, finally causes the connection loosening, and can cause the technical problem of poor equipment contact, electric leakage and even short circuit accident.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-loosening structures for insulating nuts, and in particular to an anti-loosening nested structure for insulating nuts. Background Technology

[0002] In scenarios such as electrical equipment installation and high-voltage line connection, insulating nuts are core components that simultaneously achieve mechanical fastening and electrical insulation. Their anti-loosening performance and insulation reliability are directly related to the safe operation of the equipment.

[0003] However, existing technologies have some problems: existing insulating nuts do not have anti-loosening structures and are prone to loosening and failure under vibration. Continuous vibration during the operation of electrical equipment or swaying of outdoor lines due to wind can cause the preload of the threaded connection between the nut and the bolt to gradually decrease. Due to the low surface friction coefficient of the insulating material and the lack of an effective locking structure, the nut is prone to relative rotation with vibration, eventually causing the connection to loosen, which may lead to poor equipment contact, leakage, or even short circuit accidents. Therefore, it is necessary to provide an anti-loosening nested structure for insulating nuts to solve the above technical problems. Utility Model Content

[0004] This utility model provides an anti-loosening nesting structure for insulating nuts, which solves the problem that some insulating nuts do not have an anti-loosening structure and are prone to loosening and failure under vibration. Continuous vibration during the operation of electrical equipment or swaying of outdoor lines affected by wind will cause the preload of the threaded connection between the nut and the bolt to gradually decrease. Due to the low surface friction coefficient of the insulating material and the lack of an effective locking structure, the nut is prone to relative rotation with vibration, which will eventually cause the connection to loosen and may lead to poor contact, leakage or even short circuit accidents.

[0005] To solve the above-mentioned technical problems, this utility model provides an anti-loosening nesting structure for an insulating nut, comprising:

[0006] An insulating nut body, wherein an internal thread is provided inside the insulating nut body, a first nest is provided at the upper end of the insulating nut body, and a second nest is provided at the upper end of the first nest;

[0007] An anti-loosening component is located between a first nest and a second nest, and the anti-loosening component is used to limit the relative rotation of the first nest and the second nest.

[0008] Preferably, the anti-loosening component includes an anti-slip groove, an anti-slip block, and an elastic washer. The anti-slip groove is arranged in a ring around the lower end of the second nest, and the anti-slip block is arranged in a ring around the upper end of the first nest. The anti-slip groove and the anti-slip block engage with each other.

[0009] Preferably, the elastic washer is located between the first nest and the second nest, with the lower end of the elastic washer abutting against the upper end of the first nest and the upper end of the elastic washer abutting against the lower end of the second nest.

[0010] Preferably, a pre-installed block is fixedly connected to the upper end of both sides of the second nest, and the upper end of the pre-installed block is provided with an assembly hole.

[0011] Preferably, the upper end of the insulating nut body is provided with positioning holes around its perimeter, and a positioning post is slidably connected inside the positioning holes. The upper end of the positioning post is fixedly connected to the perimeter of the lower end of the first nest.

[0012] Preferably, the insulating nut body is made of glass fiber reinforced epoxy resin material, and the first nest, anti-slip tooth block, positioning hole, pre-installed block and the second nest are all made of modified polyamide material.

[0013] Compared with related technologies, the anti-loosening nesting structure of the insulating nut provided by this utility model has the following beneficial effects:

[0014] This utility model provides an anti-loosening nested structure for an insulating nut. The first nest and the second nest are mechanically locked by the annular engagement of the anti-slip tooth block and the anti-slip tooth groove. Combined with the continuous axial preload of the elastic washer, a dual anti-loosening mechanism of "engagement locking plus elastic preload" is formed. Even in a high-frequency vibration environment, the engaging tooth structure can limit the relative rotation of the two, while the elastic washer continuously compensates for the attenuation of the thread preload. The anti-loosening reliability is improved by more than 50% compared with the traditional structure, effectively avoiding the safety hazards caused by the loosening of the insulating nut body.

[0015] This utility model provides an anti-loosening nesting structure for an insulating nut. Through the sliding cooperation between the positioning post and the positioning hole, the assembly of the first nesting with the main body of the insulating nut is precisely guided, avoiding circumferential misalignment.

[0016] This utility model provides an anti-loosening nesting structure for insulating nuts. Through the cooperation of the pre-installed block and the assembly hole, the second nest is conveniently pre-fixed to the connected part (such as equipment flange), reducing positional offset during installation. The overall structure achieves a stable connection through mechanical cooperation, preventing the second nest from falling off during assembly. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the anti-loosening nesting structure for an insulating nut provided by this utility model;

[0018] Figure 2 This is a schematic diagram of the positioning hole and positioning post structure of this utility model;

[0019] Figure 3This is a schematic diagram showing the unfolded structure of the first and second nested parts of this utility model;

[0020] Figure 4 This is a schematic diagram of the anti-loosening component structure of this utility model.

[0021] The following are the labels in the diagram: 1. Insulating nut body; 2. Internal thread; 3. First nest; 4. Second nest; 5. Anti-loosening component; 51. Anti-slip groove; 52. Anti-slip block; 53. Elastic washer; 6. Pre-installed block; 7. Positioning hole; 8. Positioning post. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Example 1:

[0024] Please see Figure 1-4 This utility model provides a technical solution: an anti-loosening nesting structure for an insulating nut, comprising: an insulating nut body 1, an internal thread 2 inside the insulating nut body 1, a first nest 3 at the upper end of the insulating nut body 1, a second nest 4 at the upper end of the first nest 3, and an anti-loosening component 5 located between the first nest 3 and the second nest 4, the anti-loosening component 5 being used to restrict the relative rotation of the first nest 3 and the second nest 4.

[0025] In this embodiment, the second nest 4 is fixed to the preset position of the connected component, such as the electrical equipment housing or the line bracket, through the assembly hole on the pre-installed block 6, ensuring that the anti-slip groove 51 of the second nest 4 faces downward. The first nest 3 is connected to the insulating nut body 1. The positioning post 8 at the lower end of the first nest 3 is aligned with the positioning hole 7 at the upper end of the insulating nut body 1 and inserted axially, so that the positioning post 8 and the positioning hole 7 fit tightly, realizing the circumferential synchronous positioning of the first nest 3 and the insulating nut body 1. At this time, the anti-slip block 52 of the first nest 3 faces upward and corresponds to the position of the anti-slip groove 51 of the second nest 4. The insulating nut body 1 with the first nest 3 assembled is screwed into the bolt through the internal thread 2. As the insulating nut body 1 is tightened, the first nest 3 gradually approaches the second nest 4 until the anti-slip block 52 contacts and engages with the anti-slip groove 51. At the same time, the elastic washer 53 is compressed to generate axial preload, completing the overall assembly.

[0026] Example 2:

[0027] Please see Figure 1-4As shown, based on Embodiment 1, this utility model provides a technical solution: the anti-loosening component 5 includes an anti-slip groove 51, an anti-slip block 52, and an elastic washer 53. The anti-slip groove 51 is arranged in a ring around the lower end of the second nest 4, and the anti-slip block 52 is arranged in a ring around the upper end of the first nest 3. The anti-slip groove 51 and the anti-slip block 52 mesh with each other. The elastic washer 53 is located between the first nest 3 and the second nest 4. The lower end of the elastic washer 53 abuts against the upper end of the first nest 3, and the upper end of the elastic washer 53... The end of the first nest 3 abuts against the lower end of the second nest 4. The upper ends of both sides of the second nest 4 are fixedly connected with pre-installed blocks 6. The upper end of the pre-installed blocks 6 is provided with assembly holes. The upper end of the insulating nut body 1 is provided with positioning holes 7 around the perimeter. The positioning holes 7 are slidably connected with positioning pins 8 inside the positioning holes 7. The upper end of the positioning pins 8 is fixedly connected to the lower end of the first nest 3 around the perimeter. The insulating nut body 1 is made of glass fiber reinforced epoxy resin material. The first nest 3, anti-slip tooth block 52, positioning hole 7, pre-installed block 6 and second nest 4 are all made of modified polyamide material.

[0028] In this embodiment: when the equipment or line vibrates, if the insulating nut body 1 tends to loosen, the first nest 3 rotates synchronously with the insulating nut body 1. At this time, the meshing structure of the anti-slip tooth block 52 and the anti-slip tooth groove 51 will generate a circumferential constraint force, preventing the relative rotation of the first nest 3 and the second nest 4. At the same time, the rebound force of the elastic washer 53 continuously applies axial pressure to maintain the tightness of the threaded connection. Under the dual action, the loosening of the insulating nut body 1 is effectively suppressed.

[0029] The working principle of the anti-loosening nesting structure for an insulating nut provided by this utility model is as follows:

[0030] Implementation steps for the first innovation point:

[0031] Step 1: Fix the second nest 4 to the preset position of the connected part, such as the electrical equipment housing or the line bracket, through the assembly hole on the pre-installed block 6, ensuring that the anti-slip groove 51 of the second nest 4 faces downward. Connect the first nest 3 to the insulating nut body 1, align the positioning post 8 at the lower end of the first nest 3 with the positioning hole 7 at the upper end of the insulating nut body 1, and insert it axially so that the positioning post 8 and the positioning hole 7 fit tightly together, thereby achieving circumferential synchronous positioning of the first nest 3 and the insulating nut body 1.

[0032] Step 2: At this time, the anti-slip tooth block 52 of the first nest 3 faces upward and corresponds to the anti-slip tooth groove 51 of the second nest 4. The insulating nut body 1 of the first nest 3 is screwed into the bolt through the internal thread 2. As the insulating nut body 1 is tightened, the first nest 3 gradually approaches the second nest 4 until the anti-slip tooth block 52 contacts and engages with the anti-slip tooth groove 51. At the same time, the elastic washer 53 is compressed to generate axial preload, and the overall assembly is completed.

[0033] Implementation steps for the second innovation point:

[0034] Step 1: When the equipment or line vibrates, if the insulating nut body 1 tends to loosen, the first nest 3 rotates synchronously with the insulating nut body 1. At this time, the meshing structure of the anti-slip tooth block 52 and the anti-slip tooth groove 51 will generate a circumferential constraint force.

[0035] The second step is to prevent relative rotation between the first nest 3 and the second nest 4. At the same time, the rebound force of the elastic washer 53 continuously applies axial pressure to maintain the tightness of the threaded connection. Under the dual action, the loosening of the insulating nut body 1 is effectively suppressed.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening nesting structure for an insulating nut, characterized in that: include: An insulating nut body (1) has an internal thread (2) inside. The upper end of the insulating nut body (1) is provided with a first nest (3), and the upper end of the first nest (3) is provided with a second nest (4). Anti-loosening component (5) is located between the first nest (3) and the second nest (4) and is used to limit the relative rotation of the first nest (3) and the second nest (4).

2. The anti-loosening nesting structure for an insulating nut according to claim 1, characterized in that, The anti-loosening component (5) includes an anti-slip groove (51), an anti-slip block (52), and an elastic washer (53). The anti-slip groove (51) is arranged in a ring around the lower end of the second nest (4), and the anti-slip block (52) is arranged in a ring around the upper end of the first nest (3). The anti-slip groove (51) and the anti-slip block (52) mesh with each other.

3. The anti-loosening nesting structure of an insulating nut according to claim 2, characterized in that, The elastic washer (53) is located between the first nest (3) and the second nest (4). The lower end of the elastic washer (53) abuts against the upper end of the first nest (3), and the upper end of the elastic washer (53) abuts against the lower end of the second nest (4).

4. The anti-loosening nesting structure of an insulating nut according to claim 1, characterized in that, The upper ends of both sides of the second nest (4) are fixedly connected with pre-installed blocks (6), and the upper ends of the pre-installed blocks (6) are provided with assembly holes.

5. The anti-loosening nesting structure of an insulating nut according to claim 1, characterized in that, The insulating nut body (1) has positioning holes (7) around its upper end. A positioning post (8) is slidably connected inside the positioning hole (7). The upper end of the positioning post (8) is fixedly connected to the lower end of the first nest (3).

6. The anti-loosening nesting structure of an insulating nut according to claim 1, characterized in that, The insulating nut body (1) is made of glass fiber reinforced epoxy resin material, and the first nest (3), anti-slip tooth block (52), positioning hole (7), pre-installed block (6) and second nest (4) are all made of modified polyamide material.

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