Damping insulator

Abstract

The utility model discloses a shock insulation sub, include: first drive link, second drive link and set up between first drive link and second drive link for the insulation of the mutual insulation of both insulation, the inside fixed sleeve of insulation, and one end of sleeve is fixed with limit piece, the inside installation of sleeve has shock attenuation device, and shock attenuation device includes first elastic member and second elastic member, and one end of first drive link swing setting is in sleeve and is under the elastic force of first elastic member and second elastic member common exertion and is against in limit piece, wherein, first elastic member and second elastic member are made respectively by different material, and the stiffness coefficient of first elastic member is greater than the stiffness coefficient of second elastic member, and the damping coefficient of first elastic member is less than the damping coefficient of second elastic member, the utility model has realized the shock attenuation effect of high stiffness high damping, has reduced the impact and vibration of equipment operation greatly, has promoted the electrical performance and reliability of electric power equipment.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage power switch technology, and in particular to a shock-absorbing insulator. Background Technology

[0002] In the field of high-voltage power equipment, bypass switches, contactors, and disconnect switches play a crucial role in the stable operation of power systems. Among these, insulators, as key components, bear the important responsibility of insulating the drive mechanism from the load mechanism, ensuring the safety and reliability of equipment operation. Furthermore, to increase contact pressure, some traditional insulators incorporate springs.

[0003] However, the existing design has certain limitations. Springs, with their high stiffness and low damping, provide some contact pressure during power equipment operation, but due to their low damping, they absorb impact energy and convert it into potential energy during switching operations. Some of this potential energy is released after impact, causing repeated bouncing of the load mechanism and frequent arcing between contacts. This can easily lead to contact erosion, poor contact, and affect the electrical performance of the equipment. Furthermore, long-term vibration can damage the insulator's structure, reducing its insulation performance and increasing safety hazards. Therefore, it is necessary to improve the existing technology to overcome its shortcomings. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a shock-absorbing insulator to overcome the shortcomings of existing insulators that cannot effectively solve vibration and reduce impact.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a vibration-damping insulator, comprising: a first transmission rod, a second transmission rod, and an insulator disposed between the first transmission rod and the second transmission rod for insulating them from each other; a sleeve is fixed inside the insulator, and a limiting member is fixed at one end of the sleeve; a vibration-damping device is installed inside the sleeve, the vibration-damping device comprising a first elastic member and a second elastic member; one end of the first transmission rod is movably disposed inside the sleeve and abuts against the limiting member under the elastic force jointly applied by the first elastic member and the second elastic member; wherein, the first elastic member and the second elastic member are made of different materials, the stiffness coefficient of the first elastic member is greater than the stiffness coefficient of the second elastic member, and the damping coefficient of the first elastic member is less than the damping coefficient of the second elastic member.

[0006] As a further improvement of this utility model, the first elastic element is a helical spring or a butterfly spring, the second elastic element is an elastic washer made of soft rubber material, and the first elastic element is located inside the second elastic element.

[0007] As a further improvement of this utility model, the sleeve is a cylindrical shape with one end open and the other end closed, and the open end of the sleeve is provided with an internal thread. The limiting member is fixedly connected to the open end of the sleeve by means of a thread. The first elastic member and the second elastic member are both elastically abutting against the closed end of the sleeve.

[0008] As a further improvement of this utility model, the limiting member is a circular nut with a groove on its end face and an external thread on its outer circumference; the inner wall of the sleeve is provided with a step, and the limiting member is threadedly connected to the sleeve and stops on the step.

[0009] As a further improvement of this utility model, the middle part of the closed end of the sleeve extends toward the inside of the sleeve to form a stroke limiting post. The stroke limiting post is distributed at intervals with the first transmission rod, and the stroke limiting post is used to limit the range of motion of the first transmission rod.

[0010] As a further improvement of this utility model, a limiting baffle is provided at one end of the first transmission rod, and the first elastic member and the second elastic member both elastically abut against one end face of the limiting baffle, so that the other end face of the limiting baffle abuts against the limiting member.

[0011] As a further improvement of this utility model, the insulator is made of plastic, and the second transmission rod and the sleeve are both injection molded integrally with the insulator, and the second transmission rod and the sleeve do not contact each other.

[0012] As a further improvement of this utility model, the outer circumferential surface of the sleeve is provided with a boss or a first annular groove that is covered or filled by the plastic material of the insulator.

[0013] As a further improvement of this utility model, the insulator is a cylindrical shape with one end open and the other end closed, and one end of the second transmission rod is provided with an "I"-shaped connector, which is injection molded into the closed end of the insulator.

[0014] As a further improvement of this utility model, the outer peripheral surface of the insulator is provided with multiple second annular grooves.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a vibration-damping insulator. By setting a first elastic element and a second elastic element made of different materials inside the insulator, the first elastic element has high stiffness and low damping characteristics, which can quickly respond to and withstand large external impacts, providing initial support and buffering; the second elastic element has low stiffness and high damping characteristics, which effectively suppresses the continuous propagation of vibration and quickly absorbs vibration energy. The two work together to achieve a high stiffness and high damping vibration reduction effect, which greatly reduces the impact and vibration generated during equipment operation, reduces the problem of unstable electrical connection caused by vibration, and thus improves the electrical performance and reliability of power equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the shock-absorbing insulator of this utility model;

[0018] Figure 2 This is a cross-sectional view of the shock-absorbing insulator of this utility model;

[0019] Figure 3 This is an exploded view of the shock-absorbing insulator of this utility model.

[0020] Referring to the accompanying drawings, the following explanations are provided:

[0021] 1. First transmission rod; 101. Limiting baffle; 2. Second transmission rod; 201. Connector; 3. Insulator; 301. Second annular groove; 4. Sleeve; 401. Step; 402. Stroke limiting post; 403. First annular groove; 5. Limiting element; 501. Groove; 6. First elastic element; 7. Second elastic element. Detailed Implementation

[0022] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0025] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0026] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0027] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0028] See Figures 1 to 3 This utility model provides a shock-absorbing insulator, comprising: a first transmission rod 1, a second transmission rod 2, and an insulator 3. The first transmission rod 1 and the second transmission rod 2 are coaxially distributed along a straight line, and the insulator 3 is disposed between the first transmission rod 1 and the second transmission rod 2 to insulate the first transmission rod 1 and the second transmission rod 2 from each other.

[0029] In this embodiment, the first transmission rod 1 is movable, and the second transmission rod 2 is fixed. Specifically, the first transmission rod 1 is a pull rod, and the second transmission rod 2 is specifically a screw. For example, when the shock-absorbing insulator of this application is applied to a bypass switch, the pull rod can be used to connect with the contacts of the bypass switch, and the screw can be used to connect with the drive mechanism of the bypass switch.

[0030] Furthermore, a sleeve 4 is fixed inside the insulator 3, and a limit member 5 is fixed at one end of the sleeve 4.

[0031] As an important improvement of this utility model, a shock-absorbing device is installed inside the sleeve 4. The shock-absorbing device includes a first elastic element 6 and a second elastic element 7. One end of the first transmission rod 1 is movably disposed inside the sleeve 4. The first elastic element 6 and the second elastic element 7 are both elastically abutting against the first transmission rod 1. The first transmission rod 1 abuts against the limiting element 5 under the elastic force jointly applied by the first elastic element 6 and the second elastic element 7.

[0032] The first elastic element 6 and the second elastic element 7 are made of different materials. The stiffness coefficient of the first elastic element 6 is greater than that of the second elastic element 7, and the damping coefficient of the first elastic element 6 is less than that of the second elastic element 7.

[0033] For example, the first elastic element 6 can be a helical spring or a butterfly spring, and the second elastic element 7 can be an elastic washer made of soft rubber material.

[0034] This invention achieves a high-stiffness, high-damping vibration reduction effect by incorporating a first elastic element 6 and a second elastic element 7 made of different materials inside the insulator. The first elastic element 6 has high stiffness and low damping characteristics, while the second elastic element 7 has low stiffness and high damping characteristics. During the operation of power equipment, the first elastic element 6 (such as a helical spring or disc spring) can quickly respond to and withstand large external impacts due to its high stiffness, providing initial support and buffering. Meanwhile, the second elastic element 7 (such as an elastic washer made of rubber) effectively suppresses the continuous propagation of vibration and quickly absorbs vibration energy, thereby significantly reducing the impact and vibration generated during equipment operation, protecting internal components, and extending the equipment's service life. This unique vibration reduction design enables power equipment to maintain a more stable operating state under frequent switching operations or other dynamic conditions, reducing electrical connection instability problems caused by vibration, such as poor contact and arcing, thereby improving the electrical performance and reliability of power equipment and ensuring the stable operation of the power system.

[0035] Preferably, in this embodiment, the first elastic element 6 is a helical spring, and the second elastic element 7 is a rubber elastic washer, with the first elastic element 6 located inside the second elastic element 7. This design, placing the first elastic element 6 inside the second elastic element 7, fully utilizes the characteristics of both elastic elements, allowing them to work together within a limited space and optimizing the vibration damping effect. Simultaneously, this layout is compact and reasonable, without occupying excessive additional space, which is beneficial for the installation and arrangement of insulators in power equipment.

[0036] In this utility model, the sleeve 4 is a cylindrical shape with an open upper end and a closed lower end, and the open end of the sleeve 4 is provided with an internal thread. The limiting member 5 is fixedly connected to the open end of the sleeve 4 by means of a thread. The first elastic member 6 and the second elastic member 7 are both elastically abutting against the closed end of the sleeve 4.

[0037] Among them, the sleeve 4 is made of metal, which can provide rigid support for the first transmission rod 1 and the shock absorption device, and is not easily worn after long-term use.

[0038] See Figure 2 and Figure 3 The limiting member 5 is a round nut with an external thread on its outer circumference (not shown in the figure). The open end of the sleeve 4 has a step 401 along its inner wall. The step 401 is located below the internal thread of the sleeve 4. The limiting member 5 is threaded to the sleeve 4 and stops on the step 401. At the same time, the upper end face of the limiting member 5 is flush with the upper end face of the sleeve 4 and the insulator 3.

[0039] The upper end face of the limiting member 5 is provided with a groove 501 along the radial direction, so as to facilitate the use of a tool to rotate the limiting member 5 through the groove 501.

[0040] In addition, the middle of the closed end of the sleeve 4 extends toward the inside of the sleeve 4 to form a stroke limiting post 402. The stroke limiting post 402 is distributed at intervals with the first transmission rod 1 and is used to limit the range of motion of the first transmission rod 1.

[0041] The sleeve 4 in this utility model adopts a cylindrical structure with an open upper end and a closed lower end. The limiting member 5 is fixedly connected to the open end of the sleeve 4 by means of threads. The sleeve 4 is also provided with a step 401 for stopping the limiting member 5 and a stroke limiting post 402 for limiting the range of motion of the first transmission rod 1. This design not only facilitates the installation and disassembly of the shock absorption device and makes it easier for later maintenance and replacement, but also, through the cooperation of the limiting member 5 and the stroke limiting post 402 of the sleeve 4, the range of motion of the first transmission rod 1 can be precisely controlled, ensuring that the shock absorption device works stably within the design range and improving the reliability and stability of the insulator.

[0042] See Figure 2A limiting baffle 101 is provided at the lower end of the first transmission rod 1. The limiting baffle 101 is circular, and its diameter is larger than the diameter of the rod portion of the first transmission rod 1. The rod portion of the first transmission rod 1 is inserted into the central hole of the limiting member 5, so that the limiting baffle 101 is positioned between the limiting member 5 and the shock-absorbing device. The first elastic member 6 and the second elastic member 7 both elastically abut against the lower end face of the limiting baffle 101, and the upper end face of the limiting baffle 101 abuts against the limiting member 5. This structural design enhances the connection stability between the first transmission rod 1 and the shock-absorbing device, ensuring that the shock-absorbing device can always effectively apply elastic force to the first transmission rod 1 during equipment operation, maintaining a good shock absorption effect.

[0043] In this invention, the insulator 3 is made of plastic. The second transmission rod 2 and the sleeve 4 are both injection molded integrally with the insulator 3, and the second transmission rod 2 and the sleeve 4 are isolated from each other by the plastic material of the insulator 3 and do not come into contact. This integrated injection molding process not only improves the overall structural strength of the insulator, reduces the assembly gap between parts, and reduces the risk of vibration caused by loosening, but also simplifies the manufacturing process, improves production efficiency, and reduces production costs.

[0044] Preferably, the outer circumferential surface of the sleeve 4 is provided with a boss or a first annular groove 403 that is covered or filled with the plastic material of the insulator 3. In this embodiment, two first annular grooves 403 are provided on the outer circumferential surface of the sleeve 4, which can effectively enhance the connection strength between the sleeve 4 and the insulator 3 and further improve the structural stability of the insulator.

[0045] Continue reading Figure 2 and Figure 3 The insulator 3 is a cylindrical shape with an open top and a closed bottom. The sleeve 4 is located inside the insulator 3. The upper end of the second transmission rod 2 is provided with an "I"-shaped connector 201. The connector 201 is injection molded into the closed end of the insulator 3, which can provide a reliable connection.

[0046] Furthermore, multiple second annular grooves 301 are provided on the outer peripheral surface of the insulator 3 to increase the creepage distance of the insulator and improve its insulation performance.

[0047] Therefore, the vibration damping insulator of this utility model, by setting a first elastic element 6 and a second elastic element 7 made of different materials inside the insulator, and the first elastic element 6 having high stiffness and low damping characteristics, can quickly respond to and withstand large external impacts, providing initial support and buffering; the second elastic element 7 having low stiffness and high damping characteristics, effectively suppresses the continuous propagation of vibration and quickly absorbs vibration energy. The two work together to achieve a high stiffness and high damping vibration damping effect, which greatly reduces the impact and vibration generated during equipment operation, reduces the problem of electrical connection instability caused by vibration, and thus improves the electrical performance and reliability of power equipment.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A shock-absorbing insulator, comprising a first transmission rod (1), a second transmission rod (2), and an insulator (3) disposed between the first transmission rod (1) and the second transmission rod (2) for insulating them from each other, wherein a sleeve (4) is fixed inside the insulator (3), and a limiting member (5) is fixed at one end of the sleeve (4); characterized in that: The sleeve (4) is equipped with a shock-absorbing device, which includes a first elastic element (6) and a second elastic element (7). One end of the first transmission rod (1) is movably disposed inside the sleeve (4) and abuts against the limiting member (5) under the elastic force jointly applied by the first elastic element (6) and the second elastic element (7). The first elastic element (6) and the second elastic element (7) are made of different materials. The stiffness coefficient of the first elastic element (6) is greater than that of the second elastic element (7), and the damping coefficient of the first elastic element (6) is less than that of the second elastic element (7).

2. The shock-absorbing insulator according to claim 1, characterized in that: The first elastic element (6) is a helical spring or a butterfly spring, and the second elastic element (7) is an elastic washer made of soft rubber material. The first elastic element (6) is located inside the second elastic element (7).

3. The shock-absorbing insulator according to claim 1, characterized in that: The sleeve (4) is a cylindrical shape with one end open and the other end closed. The open end of the sleeve (4) is provided with an internal thread. The limiting member (5) is fixedly connected to the open end of the sleeve (4) by means of a thread. The first elastic member (6) and the second elastic member (7) are both elastically abutting against the closed end of the sleeve (4).

4. The shock-absorbing insulator according to claim 3, characterized in that: The limiting member (5) is a round nut with a groove (501) on its end face and an external thread on its outer circumference; the inner wall of the sleeve (4) is provided with a step (401), and the limiting member (5) is threaded to the sleeve (4) and stops on the step (401).

5. The shock-absorbing insulator according to claim 3, characterized in that: The closed end of the sleeve (4) extends toward the inside of the sleeve (4) to form a stroke limiting post (402). The stroke limiting post (402) is distributed at intervals with the first transmission rod (1). The stroke limiting post (402) is used to limit the range of motion of the first transmission rod (1).

6. The shock-absorbing insulator according to claim 1, characterized in that: One end of the first transmission rod (1) is provided with a limiting baffle (101). The first elastic member (6) and the second elastic member (7) are elastically abutted against one end face of the limiting baffle (101), and the other end face of the limiting baffle (101) abuts against the limiting member (5).

7. The shock-absorbing insulator according to claim 1, characterized in that: The insulator (3) is made of plastic. The second transmission rod (2) and the sleeve (4) are injection molded together with the insulator (3), and the second transmission rod (2) and the sleeve (4) do not contact each other.

8. The shock-absorbing insulator according to claim 7, characterized in that: The outer circumferential surface of the sleeve (4) is provided with a boss or a first annular groove (403) that is covered or filled by the plastic material of the insulator (3).

9. The shock-absorbing insulator according to claim 7, characterized in that: The insulator (3) is a cylindrical shape with one end open and the other end closed. One end of the second transmission rod (2) is provided with an "I"-shaped connector (201), which is injection molded into the closed end of the insulator (3).

10. The shock-absorbing insulator according to claim 1, characterized in that: The outer circumferential surface of the insulator (3) is provided with multiple second annular grooves (301).

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