Carrier cable insulating rod insulator

Abstract

The utility model relates to a carrier cable insulating rod insulator, which comprises a core rod, a sheath and two end part fittings, the sheath is wrapped outside the core rod, the two end part fittings are respectively fixed at two ends of the core rod, and the two end part fittings respectively press two end parts of the sheath into the inner side of the core rod. The end fitting comprises a core rod connecting part and an external connecting end, a slot matched with the core rod and the sheath is formed at one end of the core rod connecting part, and the external connecting end is formed at the other end of the core rod connecting part. Through the arrangement of the structure of the end fitting, the installation space of the carrier cable insulating rod insulator can be adjusted when the carrier cable insulating rod insulator is installed and used, so that the convenience of installation, connection and use of the carrier cable insulating rod insulator is improved; the carrier cable insulating rod insulator not only can ensure the electrical performance of a product, but also can improve the fire resistance of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of insulators, in particular to a load-bearing cable insulating rod insulator. Background Art

[0002] With the rapid development of my country's national economy and urban construction, the population of first-tier and second-tier cities in my country is increasing. However, due to the lag in existing urban infrastructure, urban management cannot keep up with the development needs and urban traffic congestion is a serious problem. At present, the problem of traffic congestion is common in first-tier and second-tier cities in my country, which brings great trouble to the work and life of urban residents. Therefore, solving urban traffic congestion and developing rapid public transportation have become a top priority for the national economy and people's livelihood. Due to the rapid and efficient nature of urban light rail subways and their ability to make full use of underground space and save urban land resources, first-tier, second-tier cities and coastal cities are now willing to take or have taken relevant measures, hoping to improve the urban public transportation environment through the development of urban light rail transportation and subway construction.

[0003] The overhead line is a special form of power transmission line erected above the subway line to supply power to electric locomotives. The catenary is an important conductor in the electrified subway overhead line that performs the dual functions of power transmission and suspension of locomotive slideways. The insulators used on the catenary are generally made of porcelain, and the porcelain parts are porcelain straight rods. The two ends of the porcelain parts are directly solidified into one with the upper and lower steel caps through cement pouring, and there are many round holes on the steel caps for connection to the overhead line.

[0004] However, the common load-bearing cable insulating rod insulators in the prior art have the following defects: on the one hand, the porcelain sheath has poor pollution resistance and dirt is easily accumulated on the surface, so the product is prone to power frequency flashover; on the other hand, the steel cap with a round hole structure is easily affected by problems such as installation position and size measurement deviation during connection. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a load-bearing cable insulating rod insulator, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a load-bearing cable insulating rod insulator, comprising a core rod, a sheath and two end fittings, wherein the sheath is covered on the outside of the core rod, the two end fittings are respectively fixed on the two ends of the core rod, and the two end fittings respectively press the two ends of the sheath into the inner side thereof, the end fittings comprise a core rod connecting portion and an external connecting end, one end of the core rod connecting portion is formed with a slot matching the core rod and the sheath, the external connecting end is formed on the other end of the core rod connecting portion, and the external connecting end is arranged as a waist-shaped structure, a connecting hole penetrating the external connecting end is opened on the external connecting end, and the shape of the connecting hole is the same as that of the external connecting end.

[0009] In a further embodiment, the core rod is configured as a glass fiber insulated solid rod.

[0010] In a further embodiment, the sheath is configured as a fire-resistant silicone rubber sheath.

[0011] In a further embodiment, the ends of the core rod and the sheath both extend into the slot, and the core rod connecting portion is crimped and fixed to the end of the core rod.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a load-bearing cable insulating rod insulator, which has the following beneficial effects:

[0014] In the utility model, the installation space of the load-bearing cable insulating rod insulator can be adjusted during installation and use by setting the structure of the end fitting itself, thereby improving the convenience of installation and connection of the load-bearing cable insulating rod insulator;

[0015] By using a fire-resistant silicone rubber sleeve as the sheath, the insulator of the load-bearing cable insulating rod can not only ensure the electrical performance of the product, but also improve the fire resistance of the product;

[0016] By crimping the end fittings on the ends of the core rod and the sheath, the connection of the load-bearing cable insulating rod insulator itself is relatively tight, thereby improving the mechanical reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view of a load-bearing cable insulating rod insulator according to an embodiment;

[0018] Figure 2 is a cross-sectional view of an end fitting according to the embodiment.

[0019] In the figure: 10, core rod; 20, sheath; 30, end fitting; 31, core rod connecting part; 311, slot; 32, external connecting end; 321, connecting hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 and Figure 2 A load-bearing cable insulating rod insulator includes a core rod 10, a sheath 20, and two end fittings 30. The core rod 10 can be made of glass fiber material to form an insulating solid rod-shaped structure; the sheath 20 is made of fire-resistant silicone rubber material to be coated on the outside of the core rod 10, so that it can be used as a protective cover for the load-bearing cable insulating rod insulator. The two end fittings 30 are respectively fixed to the two ends of the core rod 10, and the two end fittings 30 respectively press the two ends of the sheath 20 into the inner side thereof, and the two end fittings 30 can be used to connect the load-bearing cable insulating rod insulator to the contact network.

[0022] In this embodiment, the fire-resistant silicone rubber material used in the sheath 20 can be set to the ceramic flame-retardant fire-resistant silicone rubber already available in the prior art, which is a fire-resistant and flame-retardant material prepared by adding inorganic mineral powder fillers, structure control agents and other additives to the silicone rubber matrix. This material has the excellent properties of general polymers at room temperature. When encountering high temperature or flame burning, the silicone rubber composite material forms a hard ceramic protection layer, which plays a role in isolating flames and preventing fire, thereby ensuring the normal operation of electricity in the event of a fire. It is understandable that technicians in this field can also use other flame-retardant rubber materials available in the prior art to make the sheath structure.

[0023] In this embodiment, the end fitting 30 includes a core rod connection portion 31 and an external connection end 32. The core rod connection portion 31 can be used to connect with the core rod 10; the external connection end 32 is formed at the end of the core rod connection portion 31, and the external connection end 32 can be used to connect the entire device to the contact network.

[0024] A slot 311 matching the core rod 10 and the sheath 20 is formed on the end of the core rod connection part 31 facing the core rod 10. The slot 311 can be used to allow the ends of the core rod 10 and the sheath 20 of the load-bearing cable insulating rod insulator to be inserted into the slot 311 during assembly. Then, the processing personnel can use the crimping facilities to press and fix the core rod connection part 31 to the end of the core rod 10 to complete the assembly connection of the device itself. The external connection end 32 is set as a waist-shaped structure, and a connection hole 321 passing through the external connection end 32 is opened on the external connection end 32. The shape of the connection hole 321 is the same as that of the external connection end 32, so that when the external connection end 32 is connected to the corresponding power fittings of the contact network, the external connection end 32 can be moved to adjust its connection position, thereby adjusting the installation space position of the device.

[0025] In all the schemes mentioned above, the connection between the two parts can be selected according to the actual situation by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A load-bearing cable insulating rod insulator, comprising a core rod (10), characterized in that: It also includes a sheath (20) and two end fittings (30), wherein the sheath (20) is disposed on the outside of the core rod (10), the two end fittings (30) are respectively fixed to the two ends of the core rod (10), and the two end fittings (30) respectively press the two ends of the sheath (20) into the inside thereof. The end fitting (30) comprises a core rod connection part (31) and an external connection end (32), one end of the core rod connection part (31) is formed with a slot (311) matching with the core rod (10) and the sheath (20), the external connection end (32) is formed on the other end of the core rod connection part (31), and the external connection end (32) is arranged as a waist-shaped structure, the external connection end (32) is provided with a connection hole (321) penetrating the external connection end (32), and the shape of the connection hole (321) is the same as the shape of the external connection end (32).

2. The insulator for a load-bearing cable according to claim 1, characterized in that: The sheath (20) is configured as a fire-resistant silicone rubber sheath.

3. A load-bearing cable insulating rod insulator according to claim 1 or 2, characterized in that: The ends of the core rod (10) and the sheath (20) are both inserted into the slot (311), and the core rod connecting portion (31) is crimped and fixed to the end of the core rod (10).

4. The insulator for a load-bearing cable according to claim 1, characterized in that: The core rod (10) is configured as a glass fiber insulation solid rod.

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