A spring piece-equipped anti-falling composite insulator device

Abstract

The utility model relates to a kind of anti-drop composite insulator device with spring leaf, by hardware, spring leaf I, spring leaf II, stop ring I, stop ring II and composite insulator core rod, hardware is hollow circular hollow pipe, length is 70~90 millimeters, one end is equipped with connecting pull handle, the other end opening, it is equipped with circular groove II on the inner circular surface of hardware opening end, width is 5~10 millimeters, depth is 1.0~5.0 millimeters, it is equipped with groove I on the outer circular surface of composite insulator core rod, width is 5~10 millimeters, depth is 1.0~5.0 millimeters, stop ring is by stop ring I and stop ring II, spring leaf is by spring leaf I and spring leaf II, stop ring I and spring leaf I are combined and fixed together to become semicircle ring I, stop ring II and spring leaf II are combined and fixed together to become semicircle ring II, semicircle ring I, semicircle ring II are embedded in groove I and groove II, hardware, semicircle ring I, semicircle ring II and composite insulator core rod are integrated, increase mechanical resistance.

Description

Technical Field

[0001] This invention belongs to the field of machinery, specifically the field of power equipment technology, and particularly relates to a composite insulator device with spring plates to prevent detachment. Background Technology

[0002] Currently, composite insulators are being used more and more in high-voltage lines in China. However, with the continuous increase in usage, the quality problems that have occurred are also increasing year by year. In particular, line drop accidents have very serious consequences, causing not only a lot of direct and indirect economic losses, but also the possibility of major personal injury accidents.

[0003] The end connection method of composite insulators generally adopts the relatively stable crimping type. The end crimping structure causes the fitting to undergo plastic deformation under the action of external force, so that it fits tightly with the core rod and transmits the external force to the core rod, causing the core rod to undergo elastic deformation. When the elastic deformation of the core rod and the plastic deformation of the fitting reach a certain level, the friction between them will meet the design mechanical strength.

[0004] Due to inconsistent crimping quality control among composite insulator manufacturers, according to incomplete statistics, composite insulator derailment accidents have occurred in 110kV and above voltage level lines in Zhejiang, Henan, Hunan, and other regions. The main cause of these derailment accidents is that the composite insulator core rod is pulled out of the fittings, leading to the derailment. To ensure the safe and reliable operation of the power grid and prevent composite insulator derailment accidents, the development of pull-out resistant composite insulators is imperative. Summary of the Invention

[0005] A composite insulator device with spring plates for preventing detachment is proposed, comprising fittings, semi-circular ring I, semi-circular ring II, and a composite insulator core rod. This combination increases mechanical resistance, thus increasing tensile force, resulting in mechanical resistance far exceeding that generated by the static friction force produced by the compressive force and mechanical deformation of the fittings in traditional methods.

[0006] A composite insulator device with spring plates for preventing slippage comprises a fitting, spring plate I, spring plate II, anti-slip ring I, anti-slip ring II, and a composite insulator core rod. The fitting is a hollow circular tube with a length of 70-90 mm. One end has a connecting handle, and the other end is open. The fitting is cup-shaped. A circular groove II is provided on the inner circular surface of the open end of the fitting. The groove II has a width of 5-10 mm and a depth of 1.0-5 mm. A groove I is provided on the outer circular surface of the composite insulator core rod. The groove I has a width of 5-10 mm and a depth of 1.0-5 mm. The diameter is 10 mm, and the depth is 1.0–5 mm. The anti-detachment ring consists of anti-detachment ring I and anti-detachment ring II. The two semicircles of anti-detachment ring I and anti-detachment ring II are joined together to form a complete circle. The spring plate consists of spring plate I and spring plate II. The two semicircles are joined together to form a complete circle. Anti-detachment ring I and spring plate I are combined and fixed together to form semicircular ring I. Anti-detachment ring I is located on the larger radius of the circle, and spring plate I is located on the smaller radius of the circle. Anti-detachment ring II and spring plate II are combined and fixed together to form semicircular ring II. Anti-detachment ring II is located on the larger radius of the circle, and spring plate II is located on the smaller radius of the circle. The semicircular rings I and II are... Ring II is embedded in grooves I and II. The fittings, semi-circular rings I and II, and the composite insulator core rod are combined into a single assembly, forming a four-in-one structure that mutually restrains each other. The cross-section perpendicular to the axis of the assembly is circular. Semi-circular rings I and II are interlocked to form a circular band. Because semi-circular rings I and II are interlocked to form a circular band, the contact area between the circular band and the composite insulator core rod is increased, thus increasing the mechanical resistance, i.e., the tensile force I generated by the mechanical resistance. This contrasts with the static friction force generated by traditional composite insulator devices. Tensile force II is caused by the mechanical deformation of the fitting under the compressive force, which in turn compresses the composite insulator core rod and transmits the pressure to the surface of the composite insulator core rod, causing mechanical deformation on the surface of the composite insulator core rod and resulting in stress concentration. The static friction force generated by this compressive force at the connection interface is the tensile force II of the composite insulator core rod. This mechanical resistance is much greater than the static friction force, that is, tensile force I >> tensile force II. The anti-detachment composite insulator device with spring plate is to increase the mechanical resistance of the composite insulator core rod, that is, to increase its tensile force I.

[0007] The semicircular rings I and II are firmly fixed in the grooves I and II by spring plate I and spring plate II.

[0008] The aforementioned anti-loosening composite insulator device comprises anti-loosening ring I and anti-loosening ring II, which are made of metallic materials.

[0009] The composite insulator core rod of this invention has a length of 70-90 mm within the fitting. When the mechanical resistance is at its maximum, the composite insulator core rod equipped with an anti-detachment composite insulator device is placed on a tensile testing bench. The first time, tension is applied in opposite directions at both ends of the handle. The measured tensile force value is 275 KN, and a slippage of 6 mm occurs. After the first stretch, the composite insulator core rod is placed on the tensile testing bench for a second stretch. Surface cracks appear at a tensile force value of 167 KN.

[0010] The aforementioned anti-detachment ring is made of metal materials, including copper, iron, aluminum, and manganese.

[0011] Traditionally, the tensile force is generated by the friction between the surface of the composite insulator core rod and the surface of the fitting. When the fitting is placed on the press, the outer surface of the fitting is subjected to extrusion pressure, which is transferred to the surface of the composite insulator core rod. This causes mechanical deformation on the surface of the composite insulator core rod, resulting in structural damage, excessive stress concentration, and fatigue. This residual compressive stress in the composite insulator core rod is the static friction force generated by the compressive stress at the connection interface, which is the tensile force of the insulator. Due to structural damage, the tensile force decreases, making slippage more likely and causing the composite insulator core rod to separate from the fitting.

[0012] The beneficial effects of this invention are:

[0013] A spring-loaded anti-derailment composite insulator device converts static friction into mechanical resistance, which can significantly increase the tensile strength of the composite insulator and improve the operational safety and reliability of high-voltage lines. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of a composite insulator device with spring plates for preventing detachment.

[0015] Figure 2 This is a cross-sectional schematic diagram of the groove in the composite insulator core rod of a composite insulator device with spring plates for preventing detachment.

[0016] Figure 3 This is a schematic diagram of the four-in-one AA cross-sectional structure of the anti-detachment composite insulator device with spring plates.

[0017] In the diagram: 1. Pull handle; 2. Fittings; 3-1. Spring plate I; 3-2. Spring plate II; 4-1. Anti-detachment ring I; 4-2. Anti-detachment ring II; 5. Composite insulator core rod; 6. Groove I; 7. Groove II. Detailed Implementation

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Example 1.

[0020] like Figure 1 , 2 Figure 3 shows a composite insulator device with spring plates for preventing detachment. It consists of fittings 2, spring plates 3-1 and 3-2, anti-detachment rings I 4-1 and II 4-2, and a composite insulator core rod 5. Fittings 2 are hollow circular tubes, 70 mm long, with a connecting handle 1 at one end and an open end resembling a goblet. A circular groove II 7, 5 mm wide and 1.0 mm deep, is provided on the inner surface of the open end of fittings 2. A groove I 6, 5 mm wide and 1.0 mm deep, is provided on the outer surface of the composite insulator core rod 5. The anti-detachment rings are composed of anti-detachment rings I 4-1 and II 4-2. The ring consists of two semicircles, I4-1 and II4-2, which are joined together to form a complete circle. The spring plate consists of two semicircles, I3-1 and II3-2, which are joined together to form a complete circle. I4-1 and I3-1 are fixed together to form semicircular ring I, with I4-1 located on the larger radius and I3-1 on the smaller radius. I4-2 and II3-2 are fixed together to form semicircular ring II, with II4-2 located on the larger radius and II3-2 on the smaller radius. Semicircular rings I and II are embedded in groove I6. In groove II7, fitting 2, semi-circular ring I, semi-circular ring II, and composite insulator core rod 5 are combined into a single assembly, forming a four-in-one structure that mutually restrains each other. The cross-section perpendicular to the axis of the assembly is circular. Semi-circular ring I and semi-circular ring II are firmly fixed in grooves I6 and II7 by spring plates I3-1 and II3-2. Since semi-circular ring I and semi-circular ring II are interlocked into a circular band, the contact area between the circular band and the composite insulator core rod 5 is increased, thus increasing mechanical resistance. This increases the tensile force I generated by mechanical resistance, while the tensile force II generated by static friction in traditional composite insulator devices is different. The mechanical deformation caused by the extrusion pressure on the fitting 2 compresses the composite insulator core rod 5, and transmits the pressure to the surface of the composite insulator core rod 5, causing mechanical deformation on the surface of the composite insulator core rod 5, resulting in stress concentration. The static friction force generated by this extrusion pressure at the connection interface is the tensile force II of the composite insulator core rod 5. This mechanical resistance is much greater than the static friction force, that is, tensile force I >> tensile force II. The anti-detachment composite insulator device with spring plate is to increase the mechanical resistance of the composite insulator core rod 5, that is, to increase its tensile force I. The anti-detachment ring I 4-1 and anti-detachment ring II 4-2 are made of 45 steel.

[0021] Take a composite insulator core rod 5, with grooves I6 at both ends. The composite insulator core rod 5 with grooves I6 passes through one end of the opening of the fitting 2. Semicircular rings I and II are embedded in grooves I6 and II7, so that the fitting 2, semicircular rings I and II and the composite insulator core rod 5 are combined into a whole. The composite insulator core rod 5 with pull handles 1 at both ends is hung on the test tensile test machine. The pull handles 1 at both ends are applied in opposite directions to gradually increase the tensile force value. The reading of the tensile test machine is observed and recorded when slippage occurs.

[0022] Example 2.

[0023] like Figure 1 , 2Figure 3 shows a composite insulator device with spring plates for preventing detachment. It consists of fittings 2, spring plates 3-1 and 3-2, anti-detachment rings I 4-1 and II 4-2, and a composite insulator core rod 5. Fittings 2 are hollow circular tubes, 80 mm long, with a connecting handle 1 at one end and an open end resembling a goblet. A circular groove II 7, 7 mm wide and 1.2 mm deep, is provided on the inner surface of the open end of fittings 2. A groove I 6, 7 mm wide and 1.2 mm deep, is provided on the outer surface of the composite insulator core rod 5. The anti-detachment rings consist of anti-detachment rings I 4-1, II 4-2, and III 4-2. The ring consists of two semicircles, I 4-1 and II 4-2, which are joined together to form a complete circle. The spring plate consists of two semicircles, I 3-1 and II 3-2, which are joined together to form a complete circle. I 4-1 and I 3-1 are fixed together to form semicircular ring I, with I 4-1 located on the larger radius and I 3-1 on the smaller radius. I 4-2 and I 3-2 are fixed together to form semicircular ring II, with I 4-2 located on the larger radius and I 3-2 on the smaller radius. Semicircular rings I and II are embedded in groove I. In grooves 6 and 7, fitting 2, semi-circular ring I, semi-circular ring II, and composite insulator core rod 5 are combined into a single assembly, forming a four-in-one structure that mutually restrains each other. The cross-section perpendicular to the axis of the assembly is circular. Semi-circular ring I and semi-circular ring II are firmly fixed in grooves 6 and 7 by spring plates I3-1 and II3-2. Since semi-circular ring I and semi-circular ring II are interlocked into a circular band, the contact area between the circular band and the composite insulator core rod 5 is increased, thus increasing the mechanical resistance, i.e., the tensile force I generated by the mechanical resistance. In contrast, the tensile force generated by static friction in traditional composite insulator devices is different. Force II is caused by the mechanical deformation of the fitting 2 under the extrusion pressure, which in turn compresses the composite insulator core rod 5 and transmits the pressure to the surface of the composite insulator core rod 5, causing mechanical deformation on the surface of the composite insulator core rod 5, resulting in stress concentration. The static friction force generated by this extrusion pressure at the connection interface is the tensile force II of the composite insulator core rod 5. This mechanical resistance is much greater than the static friction force, that is, tensile force I >> tensile force II. The anti-detachment composite insulator device with spring plate is to increase the mechanical resistance of the composite insulator core rod 5, that is, to increase its tensile force I. The anti-detachment ring I 4-1 and anti-detachment ring II 4-2 are made of zinc plate.

[0024] Take a composite insulator core rod 5, with grooves I6 at both ends. The composite insulator core rod 5 with grooves I6 passes through one end of the opening of the fitting 2. Semicircular rings I and II are embedded in grooves I6 and II7, so that the fitting 2, semicircular rings I and II and the composite insulator core rod 5 are combined into a whole. The composite insulator core rod 5 with pull handles 1 at both ends is hung on the test tensile testing machine. The pull handles 1 at both ends are applied in opposite directions to gradually increase the tensile force value. The reading of the tensile testing machine is observed and recorded when slippage occurs.

[0025] Example 3.

[0026] like Figure 1 , 2Figure 3 shows a composite insulator device with spring plates for preventing detachment. It consists of fittings 2, spring plates 3-1 and 3-2, anti-detachment rings I 4-1 and II 4-2, and a composite insulator core rod 5. Fittings 2 are hollow circular tubes, 85 mm long, with a connecting handle 1 at one end and an open end resembling a goblet. A circular groove II 7, 8 mm wide and 1.5 mm deep, is provided on the inner surface of the open end of fittings 2. A groove I 6, 8 mm wide and 1.5 mm deep, is provided on the outer surface of the composite insulator core rod 5. The anti-detachment rings are composed of anti-detachment rings I 4-1 and II 4-2. The ring consists of two semicircles, I4-1 and II4-2, which are joined together to form a complete circle. The spring plate consists of two semicircles, I3-1 and II3-2, which are joined together to form a complete circle. I4-1 and I3-1 are fixed together to form semicircular ring I, with I4-1 located on the larger radius and I3-1 on the smaller radius. I4-2 and II3-2 are fixed together to form semicircular ring II, with II4-2 located on the larger radius and II3-2 on the smaller radius. Semicircular rings I and II are embedded in groove I6. In groove II7, fitting 2, semi-circular ring I, semi-circular ring II, and composite insulator core rod 5 are combined into a single assembly, forming a four-in-one structure that mutually restrains each other. The cross-section perpendicular to the axis of the assembly is circular. Semi-circular ring I and semi-circular ring II are firmly fixed in grooves I6 and II7 by spring plates I3-1 and II3-2. Since semi-circular ring I and semi-circular ring II are fastened together to form a circular band, the contact area between the circular band and the composite insulator core rod 5 is increased, thus increasing the mechanical resistance, i.e., the tensile force I generated by the mechanical resistance. In contrast, the tensile force generated by static friction in traditional composite insulator devices is different. II is due to the mechanical deformation caused by the extrusion pressure on the fitting 2, which in turn extrudes the composite insulator core rod 5 and transmits the pressure to the surface of the composite insulator core rod 5, causing mechanical deformation on the surface of the composite insulator core rod 5, resulting in stress concentration. The static friction force generated by this extrusion pressure at the connection interface is the tensile force II of the composite insulator core rod 5. This mechanical resistance is much greater than the static friction force, that is, tensile force I >> tensile force II. The anti-detachment composite insulator device with spring plate is to increase the mechanical resistance of the composite insulator core rod 5, that is, to increase its tensile force I. The anti-detachment ring I 4-1 and anti-detachment ring II 4-2 are made of aluminum plate material.

[0027] Take a composite insulator core rod 5, with grooves I6 at both ends. The composite insulator core rod 5 with grooves I6 passes through one end of the opening of the fitting 2. Semicircular rings I and II are embedded in grooves I6 and II7, so that the fitting 2, semicircular rings I and II and the composite insulator core rod 5 are combined into a whole. The composite insulator core rod 5 with pull handles 1 at both ends is hung on the test tensile test machine. The pull handles 1 at both ends apply force in opposite directions, and the tensile force value is gradually increased. The reading of the tensile test machine is observed and recorded when slippage occurs.

[0028] Example 4.

[0029] like Figure 1 , 2Figure 3 shows a composite insulator device with spring plates for preventing detachment. It consists of fittings 2, spring plates 3-1 and 3-2, anti-detachment rings I 4-1 and II 4-2, and a composite insulator core rod 5. Fittings 2 are hollow circular tubes, 85 mm long, with a connecting handle 1 at one end and an open end resembling a goblet. A circular groove II 7, 10 mm wide and 2.0 mm deep, is provided on the inner surface of the open end of fittings 2. A groove I 6, 10 mm wide and 2.0 mm deep, is provided on the outer surface of the composite insulator core rod 5. The anti-detachment rings consist of anti-detachment rings I 4-1, II 4-2, and III 4-2. -1 and anti-detachment ring II 4-2 are composed of two semicircles, anti-detachment ring I 4-1 and anti-detachment ring II 4-2, which are joined together to form a complete circle. The spring plate is composed of two semicircles, spring plate I 3-1 and spring plate II 3-2, which are joined together to form a complete circle. Anti-detachment ring I 4-1 and spring plate I 3-1 are combined and fixed together to form semicircular ring I, with anti-detachment ring I 4-1 located on the larger radius and spring plate I 3-1 located on the smaller radius. Anti-detachment ring II 4-2 and spring plate II 3-2 are combined and fixed together to form semicircular ring II, with anti-detachment ring II 4-2 located on the larger radius and spring plate II 3-2 located on the smaller radius. Semicircular ring I and semicircular ring II are embedded in groove I 6 and In groove II7, fitting 2, semi-circular ring I, semi-circular ring II, and composite insulator core rod 5 are combined into a single assembly, forming a four-in-one structure that mutually restrains each other. The cross-section perpendicular to the axis of the assembly is circular. Semi-circular ring I and semi-circular ring II are firmly fixed in grooves I6 and II7 by spring plates I3-1 and II3-2. Since semi-circular ring I and semi-circular ring II are interlocked into a circular band, the contact area between the circular band and the composite insulator core rod 5 is increased, thus increasing mechanical resistance. This increases the tensile force I generated by mechanical resistance, while the tensile force II generated by static friction in traditional composite insulator devices is... The fitting 2 is subjected to compressive force, which causes mechanical deformation, thereby compressing the composite insulator core rod 5 and transmitting the pressure to the surface of the composite insulator core rod 5. This causes mechanical deformation on the surface of the composite insulator core rod 5, resulting in stress concentration. The static friction force generated by this compressive force at the connection interface is the tensile force II of the composite insulator core rod 5. This mechanical resistance is much greater than the static friction force, that is, tensile force I >> tensile force II. The anti-detachment composite insulator device with spring plate is to increase the mechanical resistance of the composite insulator core rod 5, that is, to increase its tensile force I. The anti-detachment ring I 4-1 and anti-detachment ring II 4-2 are made of gray iron 200 material.

[0030] Take a composite insulator core rod 5, with grooves I6 at both ends. The composite insulator core rod 5 with grooves I6 passes through one end of the opening of the fitting 2. Semicircular rings I and II are embedded in grooves I6 and II7, so that the fitting 2, semicircular rings I and II and the composite insulator core rod 5 are combined into a whole. The composite insulator core rod 5 with pull handles 1 at both ends is hung on the test tensile test machine. The pull handles 1 at both ends are applied in opposite directions to gradually increase the tensile force value. The reading of the tensile test machine is observed and recorded when slippage occurs.

[0031] Example 5.

[0032] like Figure 1 , 2Figure 3 shows a composite insulator device with spring plates for preventing detachment. It consists of fittings 2, spring plates 3-1 and 3-2, anti-detachment rings I 4-1 and II 4-2, and a composite insulator core rod 5. Fittings 2 are hollow circular tubes, 85 mm long, with a connecting handle 1 at one end and an open end resembling a goblet. A circular groove II 7, 4 mm wide and 1.1 mm deep, is provided on the inner surface of the open end of fittings 2. A groove I 6, 4 mm wide and 1.1 mm deep, is provided on the outer surface of the composite insulator core rod 5. The anti-detachment rings consist of anti-detachment rings I 4-1, II 4-2, and III 4-2. The ring consists of two semicircles, I4-1 and II4-2, which are joined together to form a complete circle. The spring plate consists of two semicircles, I3-1 and II3-2, which are joined together to form a complete circle. I4-1 and I3-1 are fixed together to form semicircular ring I, with I4-1 located on the larger radius and I3-1 on the smaller radius. I4-2 and II3-2 are fixed together to form semicircular ring II, with II4-2 located on the larger radius and II3-2 on the smaller radius. Semicircular rings I and II are embedded in groove I6 and... In groove II7, fitting 2, semi-circular ring I, semi-circular ring II, and composite insulator core rod 5 are combined into a single assembly, forming a four-in-one structure that mutually restrains each other. The cross-section perpendicular to the axis of the assembly is circular. Semi-circular ring I and semi-circular ring II are firmly fixed in grooves I6 and II7 by spring plates I3-1 and II3-2. Since semi-circular ring I and semi-circular ring II are interlocked into a circular band, the contact area between the circular band and the composite insulator core rod 5 is increased, thus increasing the mechanical resistance, i.e., the tensile force I generated by the mechanical resistance. In contrast, the tensile force II generated by static friction in traditional composite insulator devices is different. The mechanical deformation caused by the extrusion pressure on the fitting 2 compresses the composite insulator core rod 5, and transmits the pressure to the surface of the composite insulator core rod 5, causing mechanical deformation on the surface of the composite insulator core rod 5, resulting in stress concentration. The static friction force generated by this extrusion pressure at the connection interface is the tensile force II of the composite insulator core rod 5. This mechanical resistance is much greater than the static friction force, that is, tensile force I >> tensile force II. The anti-detachment composite insulator device with spring plate is to increase the mechanical resistance of the composite insulator core rod 5, that is, to increase its tensile force I. The anti-detachment ring I 4-1 and anti-detachment ring II 4-2 are made of lead plate material.

[0033] Take a composite insulator core rod 5, with grooves I6 at both ends. The composite insulator core rod 5 with grooves I6 passes through one end of the opening of the fitting 2. Semicircular rings I and II are embedded in grooves I6 and II7, so that the fitting 2, semicircular rings I and II and the composite insulator core rod 5 are combined into a whole. The composite insulator core rod 5 with pull handles 1 at both ends is hung on the test tensile test machine. The pull handles 1 at both ends are applied in opposite directions to gradually increase the tensile force value. The reading of the tensile test machine is observed and recorded when slippage occurs.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A composite insulator device with spring plates for preventing derailment, comprising fittings (2), spring plate I (3-1), spring plate II (3-2), anti-derailment ring I (4-1), anti-derailment ring II (4-2), and composite insulator core rod (5), characterized in that: The fitting (2) is a hollow circular tube with a length of 70-90 mm. One end is provided with a connecting handle (1), and the other end is open. A circular groove II (7) is provided on the inner circular surface of the open end of the fitting (2). The width of groove II (7) is 5-10 mm and the depth is 1.0-5.0 mm. A circular groove I (6) is provided on the outer circular surface of the composite insulator core rod (5). The width of groove I (6) is 5-10 mm and the depth is 1.0-5.0 mm. The anti-detachment ring is composed of anti-detachment ring I (4-1) and anti-detachment ring II (4-2). Ring II (4-2) consists of two semicircles that interlock to form a complete circle. The spring plate is composed of spring plate I (3-1) and spring plate II (3-2). The two semicircles interlock to form a circle. The anti-detachment ring I (4-1) and spring plate I (3-1) are combined and fixed together to form semicircular ring I. The anti-detachment ring I (4-1) is located on the larger radius of the circle, and spring plate I (3-1) is located on the smaller radius of the circle. The anti-detachment ring II (4-2) and spring plate II (3-2) are combined and fixed together to form semicircular ring II. The anti-detachment ring II (4-2) is located on the larger radius of the circle, and spring plate II (3-2) is located on the smaller radius of the circle. Semicircular ring I and semicircular ring II are embedded in groove I. In (6) and groove II (7), the fitting (2), semi-circular ring I, semi-circular ring II and composite insulator core rod (5) are combined into a composite body, forming a four-in-one structure. The cross-section perpendicular to the axis of the composite body is circular. The semi-circular ring I and semi-circular ring II are firmly fixed in groove I (6) and groove II (7) by spring plate I (3-1) and spring plate II (3-2). The semi-circular ring I and semi-circular ring II are fastened together to form a circular band, which increases the contact area between the circular band and the composite insulator core rod (5) and increases the mechanical resistance, which is the tensile force I generated by the mechanical resistance. In contrast, the traditional composite insulator device The tensile force II generated by static friction is due to the mechanical deformation of the fitting (2) under the extrusion pressure, which in turn extrudes the composite insulator core rod (5) and transmits the pressure to the surface of the composite insulator core rod (5), causing mechanical deformation on the surface of the composite insulator core rod (5) as well, resulting in stress concentration. The static friction generated by this extrusion pressure at the connection interface is the tensile force II of the composite insulator core rod (5). This mechanical resistance is much greater than the static friction, that is, tensile force I >> tensile force II. The anti-detachment composite insulator device with spring plate is to increase the mechanical resistance of the composite insulator core rod (5), that is, to increase its tensile force I.

2. The anti-derailment composite insulator device with spring sheet according to claim 1, characterized in that: The anti-detachment ring I (4-1) and anti-detachment ring II (4-2) are made of metal materials.

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