Wind-vibration-resistant suspension insulator string

Abstract

The utility model discloses a wind-vibration-resistant suspension insulator string, which comprises an insulating cross arm, a plurality of umbrella-shaped insulating blocks and a core rod for die-casting the insulating blocks together, one end of the core rod is provided with a bowl head, the other end of the core rod is connected with a crimping pipe in a crimping manner, and the crimping pipe is provided with a pin hole for fixing the crimping pipe on a hoop of a concrete pole; the bowl head is provided with a ball socket and is connected with a ball head of the suspension clamp through the ball socket; according to the utility model, the composite insulation cross arm is adopted, the insulator is fixedly installed, and the composite insulation cross arm is used in a newly-built line and can also replace an original iron cross arm in a reconstructed line; the hinge point of the suspension clamp is arranged at the vertical position, so that the suspension clamp does not need to be detached, and the insulated wire is more convenient to install and detach.

Description

Technical Field

[0001] This utility model relates to the technical field of insulated conductor fixing devices, and in particular to a suspension insulator string resistant to wind vibration. Background Technology

[0002] Coastal areas have significantly higher average annual wind speeds and a higher average number of wind-induced gusts compared to inland areas, making overhead power distribution lines more susceptible to wind-induced vibrations. Currently, conductors on straight poles of overhead power distribution lines are typically fixed to post insulators using binding wires or clamps. Due to wind loads and conductor sag, the stress at the binding points is the greatest. Under prolonged wind conditions, conductors are prone to micro-vibrations, leading to mechanical fatigue at the binding points, causing conductor breakage at those locations, and ultimately resulting in a serious accident like a broken wire.

[0003] A search revealed that patent application number CN202020143372.0 discloses a fixed suspension insulator string resistant to wind vibration, comprising a composite insulator and a suspension clamp. The composite insulator includes several umbrella-shaped insulating blocks and a core rod that strings the insulating blocks together. A ring is fixed at the lower end of the core rod and connected to the U-shaped ring of the suspension clamp through the ring. The suspension clamp includes a clamp body, which includes two clamps with their tops hinged together. A semi-circular groove is formed in the middle of the two clamps from their contact surface toward the inside of the two clamps. The two semi-circular grooves combine to form a circular groove for installing insulated wires. The clamp body is installed inside the U-shaped ring with the opening of the U-shaped ring facing downwards. The lower end of the U-shaped ring is screwed into the U-shaped ring and the clamp body in sequence from the outside of the U-shaped ring by a first bolt and then passes through the U-shaped ring for fastening.

[0004] However, the original wind-resistant fixed suspension insulator strings are only suitable for line renovation. They have problems such as small contact area in the ring connection structure, which makes them prone to wear. They also have problems such as inconvenience in installing and disassembling insulated conductors at high altitudes. That is, the clamp body and U-shaped ring in the suspension clamp need to be separated first. After the insulated conductor is installed in the clamp body, the clamp body and U-shaped ring are reinstalled together. The whole process has problems such as inconvenience in disassembly.

[0005] Therefore, a suspension insulator string resistant to wind vibration is proposed to solve the above-mentioned problems. Utility Model Content

[0006] In order to solve the above-mentioned problems existing in the prior art, this utility model provides a suspension insulator string that is resistant to wind vibration.

[0007] The technical solution of the utility model is as follows:

[0008] A suspension insulator string resistant to wind vibration includes an insulating crossarm and a suspension clamp. The insulating crossarm includes several umbrella-shaped insulating blocks and a core rod that presses the insulating blocks together. One end of the core rod is fitted with a cup head, and the other end is pressed together with a crimping tube. The crimping tube has a pin hole for fixing to the clamp of a cement pole. The cup head has a ball socket and is connected to the ball head of the suspension clamp through the ball socket. The cup head has a round hole and is connected to a stop pin through the round hole. The suspension clamp includes a clamp body, which includes two horizontally hinged clamps. The middle of the two clamps has a semi-circular groove opened from their contact surface into the two clamps. The two semi-circular grooves are combined to form a round groove for installing the insulated conductor. The upper part of the clamp has a pin hole, through which the ball head is installed in the straight groove of the clamp, and the pin is riveted in the clamp.

[0009] Preferably, a circular groove is formed through the clamp body, and a rubber tile is provided on the inner side of the circular groove.

[0010] Preferably, two sets of fasteners are installed on the same side of the clamp body.

[0011] Preferably, a hanging hole is provided at the bottom of the bowl head.

[0012] Preferably, the stop pin has a nut installed on the side that protrudes from the bowl head and is equipped with a closing pin.

[0013] This utility model has the following advantages: By using a ball-and-socket connection structure for the composite insulating crossarm and suspension clamp, the contact area is increased and wear is reduced; by using a composite insulating crossarm, the insulator is fixedly installed, which can be used in newly built lines or replace the original iron crossarm in the renovated lines; by setting the hinge point of the suspension clamp in a vertical position, the suspension clamp does not need to be disassembled, making the installation and disassembly of the insulated conductor more convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the composite insulating crossarm structure of this utility model;

[0016] Figure 3 This is a cross-sectional view of the composite insulator bowl of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the insulating crossarm connector of this utility model;

[0018] Figure 5 This is a cross-sectional view of the suspension clamp structure of this utility model;

[0019] Figure 6 This is a side view of the suspension clamp structure of this utility model.

[0020] The reference numerals in the figures are as follows:

[0021] 1. Insulating crossarm; 101. Crimped pipe; 102. Insulating block; 103. Core rod; 104. Bowl head; 105. Spherical groove; 106. Hanging hole; 107. Stop pin; 109. Nut; 110. Closed pin; 111. Ball socket; 2. Suspension clamp; 201. Pin shaft; 202. Ball head; 204. Rubber sheet; 205. Fastener; 206. Clamp body; 208. Circular groove; 209. Hinge pin. Detailed Implementation

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See Figures 1 to 6 A suspension insulator string resistant to wind vibration includes an insulating crossarm 1 and a suspension clamp 2. The insulating crossarm 1 includes several umbrella-shaped insulating blocks 102 and a core rod 103 that is die-cast together with the insulating blocks 102. One end of the core rod 103 is fitted with a cup head 104, and the other end is crimped together with a crimping tube 101. The crimping tube 101 has pin holes for fixing to the clamp on the cement pole. The cup head 104 has a ball socket 111, and the ball socket 111 connects to the ball head 20 of the suspension clamp 2. The two are connected; a round hole is provided on the cup head 104 and connected to the stop pin 107 through the round hole; the suspension clamp 2 includes a clamp body 205, the clamp body 205 includes two horizontally hinged clamps, and a semi-circular groove is opened in the middle of the two clamps from their contact surface. The two semi-circular grooves are combined to form a round groove 208 for installing insulated wires. A pin hole is provided at the upper part of the clamp. The ball head 202 is installed in the straight groove of the clamp through the pin 201 and the pin is riveted in the clamp.

[0024] Furthermore, a circular groove 208 is provided through the online clamp body 205, and a rubber tile 203 is provided on the inner side of the circular groove 208; that is, after the insulated wire is inserted and installed, the wear of the insulated wire can be reduced by contacting the rubber tile 203.

[0025] Furthermore, two sets of fasteners 204 are installed on the same side of the clamp body 205 to reinforce the insulated wire located in the circular groove 208.

[0026] Furthermore, a hanging hole 106 is provided at the lower part of the bowl head 104.

[0027] Furthermore, the stop pin 107 has a nut 109 installed on the side that protrudes from the bowl head 104 and is provided with a closing pin 110 to prevent the nut 109 from coming off due to prolonged use.

[0028] The working principle of this utility model:

[0029] In this utility model, the insulating crossarm 1 includes several umbrella-shaped insulating blocks 102 and a core rod 103 that is die-cast together to hold the insulating blocks 102. One end of the core rod 103 is fitted with a cup head 104, and the other end is pressed together with a crimping tube 101. The crimping tube 101 is provided with a pin hole for fixing to the clamp of the cement pole. The cup head 104 is provided with a ball socket 111 and is connected to the ball head 202 of the suspension clamp 2 through the ball socket 111. The cup head 104 is provided with a round hole and is connected to a stop pin 107 through the round hole. The cup head 104 is lower The part is provided with a hanging hole 106 for installing a suspension clamp 2; the suspension clamp 2 includes a clamp body 205, the clamp body 205 includes two horizontally hinged clamps, and a semi-circular groove is opened in the middle of the two clamps from their contact surface toward the inside of the two clamps. The two semi-circular grooves are combined to form a circular groove 208 for installing insulated wires. The circular groove 208 is opened through the clamp body 205, and a rubber tile 203 is provided on the inner side of the circular groove 208; that is, after the insulated wire is inserted and installed, it can reduce the wear of the insulated wire by contacting the rubber tile 203.

[0030] The upper part of the clamp on the clamp body 205 is provided with a pin hole, and the clamp body 205 is installed in the straight groove of the clamp by means of the pin 201, and the pin is riveted in the clamp.

[0031] The stop pin 107 has a nut 109 installed on the side that protrudes from the bowl head 104 and is provided with a closing pin 110 to prevent the nut 109 from coming off due to long-term use.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A suspension insulator string resistant to wind vibration, characterized in that: The device includes an insulating crossarm (1) and a suspension clamp (2). The insulating crossarm (1) includes several umbrella-shaped insulating blocks (102) and a core rod (103) that is die-cast together with the insulating blocks (102). One end of the core rod (103) is fitted with a cup head (104), and the other end is crimped together with a crimping tube (101). The crimping tube (101) is provided with a pin hole for fixing to the clamp of the cement pole. The cup head (104) is provided with a ball socket (111), and the ball socket (111) is connected to the ball head (202) of the suspension clamp (2). The bowl head (104) is connected to the stop pin (107) through a round hole; the suspension clamp (2) includes a clamp body (205), which includes two horizontally hinged clamps. The two clamps have semi-circular grooves in the middle from their contact surfaces toward the inside of the two clamps. The two semi-circular grooves are combined to form a round groove (208) for installing insulated wires. The upper part of the clamp has a pin hole. The ball head (202) is installed in the straight groove of the clamp through the pin (201), and the pin is riveted in the clamp.

2. The suspension insulator string resistant to wind vibration according to claim 1, characterized in that: The circular groove (208) extends through the online clamp body (205), and a rubber tile (203) is provided on the inner side of the circular groove (208).

3. A suspension insulator string resistant to wind vibration according to claim 1, characterized in that: Two sets of fasteners (204) are installed on the same side of the clamp body (205).

4. A suspension insulator string resistant to wind vibration according to claim 1, characterized in that: The lower part of the bowl head (104) is provided with a hanging hole (106).

5. A suspension insulator string resistant to wind vibration according to claim 1, characterized in that: The stop pin (107) is fitted with a nut (109) on the side that protrudes from the bowl head (104) and is provided with a closing pin (110).

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