Cantilever damping structure of high-voltage switch

Abstract

The utility model belongs to the technical field of high-voltage switch damping, and relates to a cantilever damping structure of a high-voltage switch, which comprises a cantilever fixing flange, a connecting rod and a suspension object, the cantilever fixing flange is sleeved on an inner conductor of the high-voltage switch, a mounting hole is prefabricated on the cantilever fixing flange, one end of the connecting rod extends into the mounting hole, and the other end of the connecting rod extends into the suspension object. The other end is connected with the hanger; and an elastic damping structure is mounted in the mounting hole. According to the basic scheme, a connecting rod and a cantilever fixing flange are connected through an elastic damping structure, and the elastic damping structure is used for damping and protecting a cantilever structure. The cantilever damping structure of the high-voltage switch can ensure that the high-voltage switch with the cantilever damping structure can work safely in a high-voltage environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-voltage switch shock absorption, and in particular relates to a cantilever shock absorption structure of a high-voltage switch. Background Art

[0002] There is a cantilever structure in some high-voltage switch housings. This cantilever structure is fixed on the current-carrying conductor in the high-voltage switch housing. The free end of the cantilever structure is composed of multiple circular resistors strung together through insulating rods. During the power-on process, the current-carrying conductor will vibrate with high frequency and low amplitude due to the electromotive force. This vibration is transmitted to the resistor string on the free end of the cantilever structure through the conductor. The resistors will produce friction due to the displacement of the vibration contact surfaces, causing the resistors to wear. In the long run, the wear will change the performance of the resistors or even damage them. Utility Model Content

[0003] The utility model aims to provide a cantilever shock-absorbing structure of a high-voltage switch, which solves the problem of wear of resistor sheets due to vibration.

[0004] The utility model is realized by the following technical solutions:

[0005] A cantilever shock-absorbing structure for a high-voltage switch comprises a cantilever fixing flange, a connecting rod and a hanging object, wherein the cantilever fixing flange is sleeved on an inner conductor of the high-voltage switch, a mounting hole is prefabricated on the cantilever fixing flange, one end of the connecting rod extends into the mounting hole, and the other end is connected to the hanging object;

[0006] An elastic shock-absorbing structure is installed in the installation hole.

[0007] Furthermore, the elastic shock absorbing structure is a plurality of dampers connected to the outer circumferential surface of the connecting rod, and the other end of the damper is connected to the inner surface of the mounting hole.

[0008] Furthermore, the damper adopts a spring damper.

[0009] Furthermore, when the cantilever counterweight is small, the connecting rod includes a rod body and a connecting shaft, the connecting shaft is installed in the mounting hole, and the rod body is connected to the hanging object.

[0010] Furthermore, when the cantilever counterweight is large, an elastic gasket is installed in the mounting hole, and the connecting rod and the elastic gasket are connected by screws.

[0011] Further, the elastic shock absorbing structure includes a fixed clamping plate and a sliding block, a first elastic washer and a second elastic washer;

[0012] The sliding block is installed in the installation hole, and the first elastic gasket fills the gap between the sliding block and the cantilever fixing flange;

[0013] The fixing clamping plates are installed on both sides of the cantilever fixing flange, the connecting rod runs through the fixing clamping plates and the sliding block, and the second elastic gasket fills the gap between the fixing clamping plates and the connecting rod.

[0014] Furthermore, an annular groove is prefabricated on the inner surfaces of the two fixed clamping plates that are opposite to each other, and a third elastic gasket is arranged in the annular groove.

[0015] Furthermore, the cantilever fixing flange is a disc.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model discloses a cantilever shock-absorbing structure of a high-voltage switch, and provides a shock-absorbing idea. The basic scheme is that the connecting rod and the cantilever fixing flange are connected by an elastic shock-absorbing structure, and the elastic shock-absorbing structure is used to protect the cantilever structure from shock. The utility model discloses a cantilever shock-absorbing structure of a high-voltage switch, which can ensure that the high-voltage switch with the cantilever shock-absorbing structure works safely in a high-voltage environment.

[0018] Furthermore, the first elastic shock-absorbing structure absorbs vibrations through the damper, and the vibration of the inner conductor drives the cantilever fixing flange to vibrate, and then transmits the vibration to the cantilever shock-absorbing structure, and the vibration is transmitted and weakened by the damper.

[0019] Furthermore, the second elastic damping structure adds an elastic gasket on the basis of the first elastic damping structure, and the vibration transmitted to the cantilever is weakened by the damper and the elastic gasket. In addition to the connection with the damper alone, the connecting rod is fixedly connected to the cantilever fixing flange by screws and elastic gaskets to achieve the parallelism between the cantilever with a heavier mass and the axis of the inner conductor.

[0020] Furthermore, the third elastic shock-absorbing structure includes a fixed clamp and a sliding block, a first elastic gasket and a second elastic gasket; the sliding block is installed in the mounting hole of the cantilever fixing flange, and the fixed clamps are installed on both sides of the cantilever fixing flange respectively, the first elastic gasket is filled in the gap between the sliding block and the cantilever fixing flange, and the second elastic gasket is filled in the gap between the fixed clamp and the connecting rod; in working conditions, the vibration of the inner conductor drives the cantilever fixing flange to vibrate, and the vibration transmitted to the cantilever structure composed of the suspension, the connecting rod and the sliding block is transmitted and weakened by the second elastic gasket and the first elastic gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a cantilever shock absorbing structure of a high voltage switch in the first embodiment;

[0022] Figure 2 for Figure 1 The main view;

[0023] Figure 3 for Figure 1Schematic diagram of the connection structure at the middle damper;

[0024] Figure 4 It is a schematic diagram of a cantilever shock absorbing structure of a high voltage switch in the second embodiment;

[0025] Figure 5 for Figure 4 The main view;

[0026] Figure 6 for Figure 4 Schematic diagram of the connection structure at the middle damper;

[0027] Figure 7 It is a schematic diagram of the structure after the shielding cover is installed at the mounting hole;

[0028] Figure 8 A schematic diagram of a cantilever shock absorbing structure of a high voltage switch in accordance with the third embodiment;

[0029] Fig. 9 for Figure 3 The main view;

[0030] Fig.10 for Fig. 9 A local enlarged view of point C in FIG.

[0031] Fig.11 This is a partial enlarged view of point C in Example 4.

[0032] Among them, 1. hanging object; 2. connecting rod; 3. cantilever fixing flange; 4. inner conductor; 5. damper; 6. connecting shaft; 7. shielding cover; 8. fixing clamp; 9. sliding block; 10-1. first elastic gasket; 10-2. second elastic gasket; 10-3. third elastic gasket; 11. elastic gasket; 12. screw. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model clearer, the following is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model, that is, the embodiments described are only part of the embodiments of the utility model, not all of the embodiments.

[0034] The components described and shown in the drawings and embodiments of the present invention can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely represents a selected embodiment of the present invention. Based on the drawings and embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present invention.

[0035] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, element, method, article or equipment that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to the process, element, method, article or equipment.

[0036] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0037] Embodiment 1

[0038] like Figure 1-Figure 3 As shown, the utility model discloses a cantilever shock-absorbing structure of a high-voltage switch, which is suitable for the situation where the cantilever counterweight is small, and specifically includes a cantilever fixing flange 3, a connecting rod 2 and a suspension 1. The cantilever fixing flange 3 is sleeved on the inner conductor 4, and a mounting hole is prefabricated on the cantilever fixing flange 3. A connecting shaft 6 is installed in the mounting hole. The suspension 1 is connected to one side of the connecting shaft 6 through the connecting rod 2. A plurality of dampers 5 are connected to the outer circumferential surface of the connecting shaft 6, and the other end of the damper 5 is connected to the inner surface of the mounting hole.

[0039] The vibration of the inner conductor 4 drives the cantilever fixing flange 3 to vibrate, and then transmits the vibration to the cantilever damping structure, and the vibration is conducted and weakened by the damper 5 .

[0040] The damper 5 used is a spring damper, which has the advantages of simple structure and low cost. The number and specifications of the spring dampers can be increased or decreased according to the situation to adapt to different vibration conditions.

[0041] Embodiment 2

[0042] like Figure 4-Figure 6 As shown, the utility model discloses a cantilever shock-absorbing structure of a high-voltage switch, which is suitable for the case where the cantilever counterweight is too large, and specifically comprises a cantilever fixing flange 3, a connecting rod 2, and a hanging object 1. The cantilever fixing flange 3 is sleeved on the inner conductor 4, and a mounting hole is prefabricated on the cantilever fixing flange 3. An elastic gasket 11 is installed in the mounting hole. The connecting rod 2 is connected to the elastic gasket 11 by a screw 12;

[0043] The hanging object 1 is connected to the connecting rod 2, and a plurality of dampers 5 are connected to the outer circumferential surface of the connecting rod 2, and the other end of the damper 5 is connected to the inner surface of the mounting hole.

[0044] The vibration of the inner conductor 4 drives the cantilever fixing flange 3 to vibrate, and then transmits the vibration to the cantilever damping structure, and the vibration is conducted and weakened by the damper 5 .

[0045] In this embodiment, the cantilever structure and the fixed component are connected by a plurality of dampers 5 perpendicular to the axial direction of the cantilever, and the dampers 5 and the elastic gaskets 11 weaken the vibration transmitted to the cantilever.

[0046] In addition to the connection using only the damper 5, the connecting rod 2 is also fixedly connected to the cantilever fixing flange 3 by means of screws 12 and elastic washers 11, so as to control the parallelism of the heavier cantilever and the axis of the inner conductor 4.

[0047] The original structure of this mechanism scenario does not need to be changed significantly. If the electric field changes need to be considered, such as Figure 7 As shown, a shielding cover 7 can be installed outside the mounting hole.

[0048] Embodiment 3

[0049] like Figure 8-Figure 10 As shown, this embodiment discloses a cantilever shock-absorbing structure of a high-voltage switch, which is suitable for situations where the cantilever counterweight is too large. It specifically includes a cantilever fixing flange 3, a connecting rod 2 and a suspension 1. The cantilever fixing flange 3 is sleeved on the inner conductor 4, and the suspension 1 is connected to the connecting rod 2.

[0050] A mounting hole is prefabricated on the cantilever fixing flange 3, a sliding block 9 is installed in the mounting hole, and an annular elastic material is installed between the sliding block 9 and the inner wall of the mounting hole. The annular elastic material is a first elastic gasket 10-1, which fills the gap between the sliding block 9 and the cantilever fixing flange 3;

[0051] A fixing clamping plate 8 is installed on both sides of the cantilever fixing flange 3. A through hole for installing the connecting rod 2 is opened on the fixing clamping plate 8. An annular elastic material is also installed in the through hole. The annular elastic material is a second elastic gasket 10-2, which fills the gap between the fixing clamping plate 8 and the connecting rod 2.

[0052] The cantilever structure composed of the suspension 1, the connecting rod 2 and the sliding block 9 is slidably constrained with the cantilever fixing flange 3 by the fixing clamp 8, and cannot move left and right (direction in the figure), and the second elastic washer 10-2 and the first elastic washer 10-1 are filled into the gaps between the connecting rod 2, the cantilever fixing flange 3 and the fixing clamp 8. In the working condition, the vibration of the inner conductor 4 drives the cantilever fixing flange 3 to vibrate, and the vibration transmitted to the cantilever structure composed of the suspension 1, the connecting rod 2 and the sliding block 9 is conducted and weakened by the second elastic washer 10-2 and the first elastic washer 10-1.

[0053] Embodiment 4

[0054] Based on the third embodiment, Fig.11 As shown, annular grooves are prefabricated on the opposite inner surfaces of the two fixed clamps 8, and a third elastic gasket 10-3 is arranged in the annular groove to increase the direction of shock absorption, enhance the shock absorption effect, and prevent the sliding block 9 from rubbing against the fixed clamp 8.

[0055] In the above embodiments, the connecting rod 2 is made of insulating material, but other materials may also be used.

[0056] The cantilever fixing flange 3 is a disc, or other shapes, such as a polygon.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A cantilever shock absorbing structure of a high voltage switch, characterized in that: It comprises a cantilever fixing flange (3), a connecting rod (2) and a hanging object (1), wherein the cantilever fixing flange (3) is sleeved on an inner conductor (4) of a high-voltage switch, a mounting hole is prefabricated on the cantilever fixing flange (3), one end of the connecting rod (2) extends into the mounting hole, and the other end is connected to the hanging object (1); An elastic shock-absorbing structure is installed in the installation hole.

2. A cantilever shock absorbing structure for a high voltage switch according to claim 1, characterized in that: The elastic shock-absorbing structure is a plurality of dampers (5) connected to the outer circumferential surface of the connecting rod (2), and the other end of the damper (5) is connected to the inner surface of the mounting hole.

3. A cantilever shock absorbing structure for a high voltage switch according to claim 2, characterized in that: The damper (5) adopts a spring damper.

4. The cantilever shock absorbing structure of a high voltage switch according to claim 2, characterized in that: When the cantilever counterweight is small, the connecting rod (2) comprises a rod body and a connecting shaft (6), the connecting shaft (6) is installed in the installation hole, and the rod body is connected to the hanging object (1).

5. The cantilever shock absorbing structure of a high voltage switch according to claim 2, characterized in that: When the cantilever counterweight is large, an elastic gasket (11) is installed in the installation hole, and the connecting rod (2) and the elastic gasket (11) are connected by screws (12).

6. The cantilever shock absorbing structure of a high voltage switch according to claim 1, characterized in that: The elastic shock-absorbing structure comprises a fixed clamping plate (8), a sliding block (9), a first elastic washer (10-1) and a second elastic washer (10-2); The sliding block (9) is installed in the installation hole, and the first elastic gasket (10-1) fills the gap between the sliding block (9) and the cantilever fixing flange (3); The fixing clamp (8) is installed on both sides of the cantilever fixing flange (3), the connecting rod (2) runs through the fixing clamp (8) and the sliding block (9), and the second elastic gasket (10-2) fills the gap between the fixing clamp (8) and the connecting rod (2).

7. A cantilever shock absorbing structure for a high voltage switch according to claim 6, characterized in that: An annular groove is prefabricated on the opposite inner surfaces of the two fixing clamping plates (8), and a third elastic gasket (10-3) is arranged in the annular groove.

8. The cantilever shock absorbing structure of a high voltage switch according to claim 1, characterized in that: The cantilever fixing flange (3) is a disc.

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