A composite insulator for preventing loosening

Abstract

The present invention discloses a composite insulator for preventing loosening, comprising a middle insulating member and an umbrella skirt sleeved outside the middle insulating member, a mounting assembly is provided below the middle insulating member, the mounting assembly comprises a bottom mounting portion and a chassis vertically rotatably mounted on the bottom mounting portion, the middle insulating member is mounted on the chassis; a limiting structure is provided between the chassis and the bottom mounting portion to limit the chassis from rotating relative to the bottom mounting portion, when the chassis is separated from the limiting structure, the chassis can rotate relative to the bottom mounting portion; a mounting plate is provided above the middle insulating member, a support plate is vertically rotatably mounted on the mounting plate, and a fixing structure for fixing cables is provided on the support plate. The present invention has a simple structure and reduces wear at the connection between the cable and the support plate, and at the same time, the mounting plate can be rotated first through the support plate, and the chassis can be rotated relative to the bottom mounting portion to facilitate cleaning of the umbrella skirt.

Description

Technical Field

[0001] The invention relates to the technical field of insulating objects in cable accessories, in particular to an anti-loosening composite insulator. Background Art

[0002] In order to prevent the current of the high-voltage transmission line from flowing back to the earth along the power tower (or pole), an insulator is installed between the high-voltage transmission line and the power tower. The insulator is formed by a combination of insulating materials and a special shape (such as an umbrella shape). During the long-term use of the insulator, dust, bird droppings, etc. adhere to the surface of the insulator, which may form a conductive layer that affects its insulation effect. Therefore, it is often necessary for workers to regularly clean the insulator with a high-pressure water gun to ensure its insulation effect. Since the insulator is relatively fixed, the staff needs to perform high-pressure cleaning on the insulator from multiple angles. Therefore, the staff needs to hold the high-pressure water gun and rotate around the insulator for cleaning, which increases the labor intensity of the staff to a certain extent. In addition, since the insulator is subjected to forces from multiple angles, the stability of the connection between the insulator and the high-voltage line is affected to a certain extent. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention provides an anti-loosening composite insulator.

[0004] The present invention provides an anti-loosening composite insulator, comprising a middle insulating member and an shed sleeve mounted outside the middle insulating member. It should be noted that the middle insulating member may be an insulating rod or an insulating rod in the prior art. A mounting assembly is provided below the middle insulating member. The mounting assembly comprises a bottom mounting portion and a chassis vertically rotatably mounted on the bottom mounting portion. The middle insulating member is mounted on the chassis.

[0005] A limiting structure is provided between the chassis and the bottom mounting portion to limit the chassis from rotating relative to the bottom mounting portion. When the chassis is separated from the limiting structure, the chassis can rotate relative to the bottom mounting portion.

[0006] A mounting plate is installed above the middle insulating member, a support plate is vertically rotatably installed on the mounting plate, and a fixing structure for fixing cables is provided on the support plate.

[0007] In actual use, since the cable is installed on the support plate, and the support plate can rotate relative to the mounting plate, when a large shake occurs, the support plate can rotate a certain angle relative to the mounting plate, which reduces the relative force at the connection between the cable and the support plate to a certain extent, prevents the connection between the cable and the insulator from loosening, and increases its service life;

[0008] At the same time, when it is necessary to use a high-pressure water gun to wash the umbrella skirt, the chassis is separated from the limiting structure, and the umbrella skirt can be rotated relative to the high-pressure water gun when washing the umbrella skirt, thereby increasing the cleaning effect, and there is no need for staff to operate the washing at multiple angles. When the umbrella skirt does not need to be washed, the chassis is in contact with the limiting structure to prevent the chassis from rotating relative to the bottom mounting part.

[0009] Preferably, a rotating shaft is provided at the bottom of the chassis, a rotating hole is opened on the bottom mounting portion, the rotating shaft is installed in the rotating hole, and the limiting structure is arranged between the rotating shaft and the bottom mounting portion to facilitate the installation of the chassis and the limiting structure.

[0010] Specifically, in some embodiments, a fixing pin is detachably mounted on the side of the bottom mounting portion, and the fixing pin is a limiting structure. The fixing pin has a portion extending to the rotating shaft for fixing the rotating shaft.

[0011] Since the fixing pin is located at the side of the bottom mounting portion and the position of the rotating shaft relative to the fixing pin is not visible, it is difficult to insert the fixing pin into the rotating shaft to fix the rotating shaft, especially for high-altitude operations.

[0012] In order to facilitate the relative fixation of the chassis and the bottom mounting part, in some embodiments, preferably, the rotating hole includes a lower fixed part and an upper rotating part that are connected and coaxial, the bottom of the rotating shaft has a matching part, the lower fixed part has a fixing protrusion, and the matching part has a fixing groove. When the fixing protrusion matches the fixing groove, the rotating shaft cannot rotate relative to the bottom mounting part. When the rotating shaft moves upward so that the lower matching part is located in the upper rotating part, the rotating shaft can rotate relative to the bottom mounting part. A lifting mechanism is also provided, which is installed between the chassis and the bottom mounting part and is used to drive the chassis to move upward and make the matching part located in the upper rotating part.

[0013] When the rotating shaft falls into the fixed groove, due to the lifting mechanism removing the support for the rotating shaft, if the bottom of the rotating shaft contacts the top of the fixed protrusion, the rotating shaft needs to be rotated by a certain angle to make the fixed protrusion located in the fixed groove. For this purpose, the top of the fixed protrusion is semi-cylindrical. And the axis of the semi-cylinder is located on a diameter of the rotating hole. Preferably, a spacer is formed between any two adjacent fixed grooves of the rotating shaft, the bottom of the spacer is an inclined surface, there are at least two spacers, and the inclined surfaces of at least two spacers are inclined surfaces that gradually tilt downward in a clockwise or counterclockwise direction. Under the action of the weight of the rotating shaft itself and the pressure of the high-voltage line on the fixed shaft, the matching part of the rotating shaft can be moved to the lower fixed part under the action of a relatively small force.

[0014] In some embodiments, the lifting mechanism is preferably a lifting rod, which is located below the rotating shaft, and the lifting rod drives the rotating shaft to be lifted in the vertical direction. The lifting rod can be an electric lifting rod or a pneumatic or hydraulic lifting rod. Of course, the lifting rod can also be a screw rod, which is driven to move upward by rotating the screw rod.

[0015] In order to reduce the friction between the lifting rod and the rotating shaft, as a further optimized solution of the present invention, a roller is provided at the top end of the lifting rod, and the roller is in point contact with the bottom of the rotating shaft.

[0016] Preferably, in some embodiments, a lifting hole is opened on the bottom mounting portion, the lifting hole is connected to the rotating hole, and the hole diameter of the lifting hole is smaller than the outer diameter of the rotating shaft, so as to further increase the overall stability.

[0017] In some embodiments, preferably, a mounting frame is provided at the bottom of the bottom mounting portion, the mounting frame is mounted on a utility pole or a cable rack, and the lifting rod is mounted on the mounting frame.

[0018] In order to prevent the rotating shaft in the chassis from moving upward out of the rotating hole, a column is provided on the bottom mounting portion, and an extension portion is provided on the column. The extension portion has a portion located above the chassis and opposite to the chassis, and the extension portion is used to limit the displacement of the chassis moving upward to prevent the rotating shaft of the chassis from being separated from the bottom mounting portion. In some embodiments, the extension portion is made of insulating material, and the extension portion is provided with at least two groups, and at least two groups of the extension portions form an umbrella-shaped structure.

[0019] Specifically, during the installation process, the rotating shaft can be first placed in the rotating hole of the bottom mounting part, and then the column can be installed to enable the extension part on the column to limit the vertical movement displacement of the cover chassis. Preferably, when the chassis is at the bottom, the distance between the extension part and the chassis is greater than the height of the lower fixed part to ensure that the rotating shaft can rotate relative to the bottom mounting part after moving the rotating shaft upward.

[0020] In the present invention, the anti-loosening composite insulator proposed has a simple structure. If a large shaking occurs, the support plate can rotate a certain angle relative to the mounting plate, which reduces the relative force at the connection between the cable and the support plate to a certain extent, prevents the connection between the cable and the insulator from loosening, and increases its service life.

[0021] At the same time, when it is necessary to use a high-pressure water gun to wash the umbrella skirt, the chassis is separated from the limiting structure, and the umbrella skirt can be rotated relative to the high-pressure water gun when washing the umbrella skirt, thereby increasing the cleaning effect, and there is no need for staff to operate the washing at multiple angles. When the umbrella skirt does not need to be washed, the chassis is in contact with the limiting structure to prevent the chassis from rotating relative to the bottom mounting part.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the connection structure between the bottom mounting part and the chassis in some embodiments of the present invention;

[0025] Figure 3 It is a schematic diagram of the connection structure between the bottom mounting part and the chassis in some embodiments of the present invention;

[0026] Figure 4 For the present invention Figure 3 A schematic diagram of the bottom mounting structure;

[0027] Figure 5 For the present invention Figure 3 Schematic diagram of the mid-chassis structure;

[0028] Figure 6 It is a schematic diagram of the bottom mounting part and the chassis structure in some embodiments of the present invention;

[0029] In the figure: 1. middle insulating part; 2. umbrella skirt; 3. bottom mounting part; 30. rotating hole; 301. lower fixing part; 300. upper rotating part; 31. lifting hole; 4. chassis; 5. mounting plate; 6. support plate; 7. snap ring; 8. rotating shaft; 80. fixing groove; 81. spacer; 9. lifting mechanism; 10. fixing protrusion; 11. roller; 12. mounting frame; 13. column; 14. extension part; 15. fixing pin. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] like Figure 1 The anti-loosening composite insulator shown in the figure comprises a middle insulating member 1 and an shed 2 sleeved outside the middle insulating member 1. It should be noted that the middle insulating member 1 can be an insulating rod or an insulating rod in the prior art. A mounting assembly is provided below the middle insulating member 1. The mounting assembly comprises a bottom mounting portion 3 and a chassis 4 vertically rotatably mounted on the bottom mounting portion 3. The middle insulating member 1 is mounted on the chassis 4. Specifically, the middle insulating member 1 is fixed on the chassis 4.

[0032] There is a limiting structure between the chassis 4 and the bottom mounting portion 3 to limit the chassis 4 from rotating relative to the bottom mounting portion 3. When the chassis 4 is separated from the limiting structure, the chassis 4 can rotate relative to the bottom mounting portion 3.

[0033] A mounting plate 5 is installed above the middle insulating member 1, and a support plate 6 is vertically rotatably installed on the mounting plate 5. A fixing structure for fixing the cable is provided on the support plate 6. As in the prior art, a limiting groove is provided on the upper surface of the support plate 6, and the cable is installed in the limiting groove. A clamping ring 7 is provided on the support plate 6, and the clamping ring 7 is detachably installed on the support plate 6 and forms a through hole with the limiting groove. The cable passes through the through hole to prevent the cable from detaching from the support plate 6.

[0034] In actual use, since the cable is installed on the support plate 6, and the support plate 6 can rotate relative to the mounting plate 5, when a large shake occurs, the support plate 6 can rotate a certain angle relative to the mounting plate 5, which reduces the relative force at the connection between the cable and the support plate 6 to a certain extent, thereby increasing its service life;

[0035] At the same time, when it is necessary to use a high-pressure water gun to wash the umbrella skirt 2, the chassis 4 is separated from the limiting structure so that the chassis 4 can rotate relative to the bottom mounting part 3 and the support plate 6 can rotate relative to the mounting plate 5. Then, when the umbrella skirt 2 is washed, the umbrella skirt 2 can rotate relative to the high-pressure water gun to increase the cleaning effect, and the staff does not need to operate the washing at multiple angles. When the umbrella skirt 2 does not need to be washed, the chassis 4 is in contact with the limiting structure to prevent the chassis 4 from rotating relative to the bottom mounting part 3.

[0036] In some embodiments, preferably, a rotating shaft 8 is provided at the bottom of the chassis 4, a rotating hole 30 is opened on the bottom mounting part 3, the rotating shaft 8 is installed in the rotating hole 30, and the limiting structure is arranged between the rotating shaft 8 and the bottom mounting part 3 to facilitate the installation of the chassis 4 and the limiting structure.

[0037] like Figure 2 Specifically, as shown in some embodiments, a fixing pin 15 is detachably mounted on the side of the bottom mounting portion 3 . The fixing pin 15 is a limiting structure, and the fixing pin has a portion extending to the rotating shaft 8 for fixing the rotating shaft 8 .

[0038] like Figure 3-Figure 5As shown, in order to facilitate the relative fixation of the chassis 4 and the bottom mounting part 3, in some embodiments, preferably, the rotating hole 30 includes a lower fixed part 301 and an upper rotating part 300 that are connected and coaxial, and the upper rotating part 300 is located above the lower fixed part 301. The bottom of the rotating shaft 8 has a matching part, and the lower fixed part has a fixing protrusion 10. The matching part has a fixing groove 80. When the fixing protrusion 10 matches the fixing groove 80, the rotating shaft 8 cannot rotate relative to the bottom mounting part 3. When the rotating shaft 8 moves upward so that the lower matching part is located in the upper rotating part, the rotating shaft 8 can rotate relative to the bottom mounting part 3. A lifting mechanism 9 is also provided. The lifting mechanism 9 is installed between the chassis 4 and the bottom mounting part 3 and is used to drive the chassis 4 to move upward and make the matching part located in the upper rotating part. The lifting mechanism 9 drives the rotating shaft 8 to move upward, thereby realizing the separation of the matching part from the lower fixed part 301, so that the rotating shaft 8 can be rotated, and then the umbrella skirt 2 can be rotated when flushing. When there is no need to flush the umbrella skirt 2, the lifting mechanism 9 does not lift the rotating shaft 8. Under the action of its own gravity, the rotating shaft 8 causes the matching part to fall to the lower fixed part 301 to realize the clamping of the rotating shaft 8.

[0039] Preferably, the length of the rotating shaft 8 is not less than half the height of the umbrella skirt 2, and in order to increase stability, when the rotating shaft 8 can rotate relative to the bottom mounting portion 3, the length of the rotating shaft 8 located in the upper rotating portion is not less than one quarter of the height of the umbrella skirt 2.

[0040] When the rotating shaft 8 falls into the fixed groove 80, since the lifting mechanism 9 removes the support for the rotating shaft 8, if the bottom of the rotating shaft 8 contacts the top of the fixed protrusion 10, the rotating shaft 8 needs to be rotated by a certain angle so that the fixed protrusion 10 is located in the fixed groove 80. For this purpose, the top of the fixed protrusion 10 is semi-cylindrical. And the axis of the semi-cylinder is located on a diameter of the rotating hole 30. Preferably, a spacer 81 is formed between any two adjacent fixed grooves 80 of the rotating shaft 8, and the bottom of the spacer 81 is an inclined surface. There are at least two spacers 81, and the inclined surfaces of at least two spacers 81 are inclined surfaces that gradually tilt downward in the clockwise or counterclockwise direction. Under the weight of the rotating shaft 8 itself and the pressure of the high-voltage line on the fixed shaft, the matching part of the rotating shaft 8 can be moved to the lower fixed part 301 under the action of a small force.

[0041] In some embodiments, the lifting mechanism 9 is a lifting rod, which is located below the rotating shaft 8 and is lifted to lift the rotating shaft 8 in the vertical direction. The lifting rod can be an electric lifting rod or a pneumatic or hydraulic lifting rod. Of course, the lifting rod can also be a screw rod, which is driven to move upward by rotating the screw rod.

[0042] In order to reduce the friction between the lifting rod and the rotating shaft 8, as a further optimization scheme of the present invention, a roller 11 is provided at the top of the lifting rod. The outer diameter of the roller 11 is smaller than the outer diameter of the rotating shaft 8. The roller 11 is in point contact with the bottom of the rotating shaft 8, thereby facilitating the rotation of the umbrella skirt 2 for easy cleaning.

[0043] In some embodiments, preferably, a lifting hole 31 is opened on the bottom mounting portion 3, the lifting hole 31 is connected to the rotating hole 30, and the hole diameter of the lifting hole 31 is smaller than the outer diameter of the rotating shaft 8, further increasing the overall stability.

[0044] In some embodiments, preferably, a mounting frame 12 is provided at the bottom of the bottom mounting portion 3 , the mounting frame 12 is mounted on a utility pole or a cable rack, and the lifting rod is mounted on the mounting frame 12 .

[0045] like Figure 6 As shown, in order to prevent the rotating shaft 8 in the chassis 4 from moving upward out of the rotating hole 30, a column 13 is provided on the bottom mounting portion 3, and an extension portion 14 is provided on the column 13. The extension portion 14 is located above the chassis 4 and is used to limit the vertical movement of the chassis 4 to prevent the rotating shaft 8 of the chassis 4 from being separated from the bottom mounting portion 3. Preferably, the column 13 and the extension portion are provided in multiple groups, and the multiple groups of extension portions 14 form a ring structure located above the chassis 4. Preferably, the extension portion 14 is made of insulating material, and the multiple extension portions 14 are umbrella-shaped.

[0046] Specifically, during the installation process, the rotating shaft 8 can be first placed in the rotating hole 30 of the bottom mounting portion 3, and then the column 13 can be installed to realize that the extension portion on the column 13 limits the vertical movement displacement of the chassis 4. Preferably, when the chassis 4 is at the bottom, the distance between the extension portion 14 and the chassis 4 is greater than the height of the lower fixing portion 301 to ensure that the rotating shaft 8 can rotate relative to the bottom mounting portion 3 after the rotating shaft 8 is moved upward.

[0047] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be mechanically connected, electrically connected, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A composite insulator that prevents loosening, comprising a central insulating member (1) and an shed (2) sleeved outside the central insulating member (1), characterized in that: A mounting assembly is provided below the middle insulating member (1), the mounting assembly comprising a bottom mounting portion (3) and a chassis (4) mounted vertically rotatably on the bottom mounting portion (3), the middle insulating member (1) being mounted on the chassis (4); A limiting structure is provided between the chassis (4) and the bottom mounting portion (3) for limiting the rotation of the chassis (4) relative to the bottom mounting portion (3); when the chassis (4) is separated from the limiting structure, the chassis (4) can rotate relative to the bottom mounting portion (3); A mounting plate (5) is mounted above the middle insulating member (1), a support plate (6) is mounted on the mounting plate (5) for vertical rotation, and a fixing structure for fixing cables is provided on the support plate (6); The bottom of the chassis (4) is provided with a rotating shaft (8), the bottom mounting portion (3) is provided with a rotating hole (30), the rotating shaft (8) is installed in the rotating hole (30), and the limiting structure is arranged between the rotating shaft (8) and the bottom mounting portion (3); The rotating hole (30) comprises a lower fixed portion (301) and an upper rotating portion (300) which are connected and coaxial, the bottom of the rotating shaft (8) comprises a matching portion, the lower fixed portion (301) comprises a fixing protrusion (10), the matching portion comprises a fixing groove (80), and when the matching portion is located in the lower fixed portion (301), the fixing protrusion (10) matches with the fixing groove (80); and the rotating hole (30) further comprises a lifting mechanism (9), the lifting mechanism (9) being used for driving the rotating shaft (8) to move upward and disengaging the matching portion from the lower fixed portion (301) so that the rotating shaft (8) can rotate relative to the rotating hole (30).

2. The anti-loosening composite insulator according to claim 1, characterized in that: The limiting structure is a fixing pin, and the fixing pin is detachably mounted on the side of the bottom mounting portion (3).

3. The anti-loosening composite insulator according to claim 1, characterized in that: The top of the fixing protrusion (10) is a curved surface.

4. The anti-loosening composite insulator according to claim 1 or 3, characterized in that: A spacer (81) is formed between any two adjacent fixing grooves (80), the bottom of the spacer (81) being an inclined surface gradually inclined downward in a clockwise or counterclockwise direction, and there are at least two spacers (81), and the bottom inclined surfaces of at least two of the spacers (81) have the same inclination direction.

5. The anti-loosening composite insulator according to claim 1, characterized in that: The lifting mechanism (9) is a lifting rod, which is mounted on the bottom mounting portion (3) and is used to drive the rotating shaft (8) to move upward.

6. The anti-loosening composite insulator according to claim 5, characterized in that: A roller (11) is provided on the top of the lifting rod.

7. The anti-loosening composite insulator according to claim 1, characterized in that: The bottom mounting portion (3) is provided with a column (13), and the column (13) is provided with an extension portion (14). The extension portion (14) has a portion located above the chassis (4) and opposite to the chassis (4), and the extension portion (14) is used to limit the upward displacement of the chassis (4).

8. The anti-loosening composite insulator according to claim 7, characterized in that: The extension part (14) is made of insulating material, and at least two groups of the extension part (14) are provided, and at least two groups of the extension part (14) form an umbrella-shaped structure.

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