Urban rail transit flexible contact net integrated forming insulating arm device

Abstract

The utility model belongs to the field of urban rail transit contact network technology, disclose a kind of urban rail transit flexible contact network integrated insulation wrist arm device, including single ear sleeve, fixed part, cable base and positioner, further including wrist arm main body, wrist arm main body is made of composite material, the inside of wrist arm main body adopts sandwich structure, a pair of end of wrist arm main body is equipped with single ear sleeve, and the upper end periphery of wrist arm main body away from end is equipped with cable base, and the lower end periphery of wrist arm main body away from end is connected with position tube by fixed part, and position tube is "Z" type, and the one end of position tube away from fixed part is equipped with locating ring, and the side of locating ring is equipped with positioner. The device simple and reasonable in structure, novel in design, easy to operate, with high practicability, it is convenient to widely use.

Description

Technical Field

[0001] This utility model belongs to the field of urban rail transit contact network technology, and more specifically, it relates to an integrated molded insulating cantilever arm device for urban rail transit flexible contact network. Background Technology

[0002] The overhead contact system for urban rail transit is a key piece of equipment that provides power to rail transit vehicles. The vehicles obtain power by connecting the pantograph to the contact system to drive the vehicles forward. The overhead contact system is classified into flexible and rigid types according to its installation method. Rigid contact systems are generally used in underground tunnels and are fixed to the tunnel ceiling by rigid structural components. Flexible contact systems are generally used in open areas of ground or elevated lines and in depots. Flexible contact systems suspend the contact system at a certain height above the ground by installing support and suspension devices on pillars or hanging columns erected at certain intervals. These support and suspension points are called contact system positioning points. Currently, the industry typically uses the installation method of connecting metal cantilever arms with porcelain rod insulators to separate the live and non-energized parts of the contact system. In depots and open-air line areas without shielding, flexible contact systems are susceptible to adverse effects from external environmental factors. For example, rain and snow erosion can cause the metal cantilever arms to rust or the insulation performance of the insulators to deteriorate. Wind-blown foreign objects or bird nests can cause short circuits between the live and non-energized parts, resulting in short circuits and loss of power in the contact system, disrupting the normal operation of the line.

[0003] In view of this, the above problems are currently solved in three main ways: First, by adding protective umbrella skirts to the insulators to increase the size of the insulator skirts, the possibility of short circuits caused by foreign objects or bird nests at the insulators is reduced. Second, by applying insulating paint or wrapping insulating silicone rubber products on the cantilever device to make the metal cantilever components have insulating properties, and increasing the insulation distance to reduce the possibility of short circuits. Third, by replacing individual components of the flat or oblique cantilever in the cantilever structure with insulating material components, thereby improving the overall insulation performance of the positioning point. However, the existing technical solutions also have obvious shortcomings, mainly reflected in the following points: (1) Poor resistance to external environmental interference, the insulation distance of the rod insulator is relatively short, and when subjected to long-term rain and snow erosion or foreign object overlap, the insulation is easily reduced or even the contact network short circuit trips. In order to prevent birds from nesting, a lot of manpower and material resources need to be invested every year; (2) The workload of equipment installation and maintenance is large. Insulators in open areas are prone to contaminant adhesion, which leads to a decrease in insulation strength. In actual operation and maintenance, they are generally wiped by manpower, which is time-consuming, laborious and inefficient. In addition, there are many bolts and nuts in the conventional assembly of the cantilever arm, and the corresponding inspection and maintenance workload during equipment maintenance and repair is large. The risk of equipment falling off due to loose bolts and nuts at the connection points is relatively high. Replacing the loose insulating parts cannot solve the problem of large maintenance workload; (3) Adding a large umbrella skirt and applying insulating paint has a relatively small improvement on the insulation performance of the equipment. At the same time, the addition of the umbrella skirt and the spraying of the insulating paint both need to be carried out manually. Moreover, the added rubber umbrella skirt and insulating paint are prone to aging and falling off or being washed away by rainwater over time, and need to be repeated every year, which is time-consuming and labor-intensive.

[0004] Therefore, to address the shortcomings of assembled metal cantilever arms, this invention addresses three aspects: improving the cantilever arm's resistance to environmental impact, increasing insulation distance, and enhancing maintenance and inspection efficiency. It provides an integrated insulated cantilever arm device for urban rail transit flexible contact networks. This invention replaces existing methods for improving cantilever arm insulation and preventing bird damage by improving the cantilever arm's materials and structure, thereby solidifying the aforementioned improved performance as inherent properties of the cantilever arm itself. This enhances the reliability of equipment operation while reducing the workload of equipment maintenance. Utility Model Content

[0005] In view of the above-mentioned technical problems, in order to solve them, this utility model provides an integrated insulated cantilever arm device for flexible contact wires in urban rail transit, which is achieved by the following specific technical means:

[0006] An integrated insulated cantilever arm device for flexible contact wire in urban rail transit includes a single-ear sleeve, a fixing component, a catenary base, and a locator. It also includes a cantilever arm body made of composite material with a sandwich structure inside. A single-ear sleeve is installed at each of the two ends of the cantilever arm body. A catenary base is installed on the upper periphery of the cantilever arm body away from the ends. A positioning tube is connected to the lower periphery of the cantilever arm body away from the ends via a fixing component. The positioning tube is Z-shaped, and a positioning ring is installed at the end of the positioning tube away from the fixing component. A locator is installed on one side of the positioning ring.

[0007] Furthermore, the composite material used in the main body of the wrist arm is a fiber-reinforced resin-based composite material.

[0008] Furthermore, the interior of the main arm sandwich structure is filled with a composite material.

[0009] Furthermore, the surface of the wrist arm body is coated with an anti-aging coating.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] Applying composite materials to the production of flexible contact network cantilever arms replaces traditional metal materials, fundamentally solving the problems of metal corrosion and conductivity. The one-piece molding design reduces the number of connection points (from 8 to 3), lowering the risk of bolt loosening. The equipment weight is halved, significantly improving installation and maintenance efficiency. The insulation distance is greatly increased compared to traditional solutions, and the resistance to environmental interference is significantly enhanced (no need for bird protection or insulating varnish maintenance). The reliability of equipment operation and maintenance efficiency are improved simultaneously. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0013] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0014] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0015] 1. Single ear sleeve; 2. Fixing component; 3. Support cable base; 4. Positioner; 5. Carrier arm body; 6. Positioning tube; 7. Positioning ring. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, and other quantifiers are similar.

[0018] It should be understood that although the terms "first," "second," "third," etc., may be used in the embodiments of this application, these descriptions should not be limited to these terms. These terms are only used to distinguish the described objects. For example, "first" may also be referred to as "second," and similarly, "second" may also be referred to as "first," without departing from the scope of the embodiments of this application. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] It should be understood that the term "and / or" as used herein is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0020] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0022] As attached Figure 1 To be continued Figure 2 As shown:

[0023] This utility model provides an integrated molded insulating cantilever arm device for flexible contact networks in urban rail transit, including a single-ear sleeve 1, a fixing component 2, a catenary cable base 3, and a locator 4, as well as a cantilever arm body 5. The cantilever arm body 5 is made of composite material and has a sandwich structure inside. A single-ear sleeve 1 is installed at each of the two ends of the cantilever arm body 5. The size of the single-ear sleeve 1 is consistent with the size parameters of the single ear at the end of the existing cantilever arm insulator, and can be directly adapted to conventional cantilever arm base installation and is compatible with existing equipment interfaces. The catenary cable base 3 is installed on the upper periphery of the cantilever arm body 5 away from the end. The positioning tube 6 is connected to the lower periphery of the cantilever arm body 5 away from the end through the fixing component 2. The positioning tube 6 is "Z" shaped. A positioning ring 7 is installed at the end of the positioning tube 6 away from the fixing component 2, and a locator 4 is installed on one side of the positioning ring 7.

[0024] The composite material used in the main body 5 of the wrist arm is a fiber-reinforced resin-based composite material, which has insulation properties, corrosion resistance, aging resistance, fatigue resistance and lightweight characteristics.

[0025] The interior of the main body 5 of the wrist arm is filled with composite material.

[0026] The surface of the main body 5 of the wrist arm is coated with an anti-aging coating, which has anti-corrosion, anti-ultraviolet, anti-pollutant adhesion, high water repellency and low wind resistance properties.

[0027] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0028] The working principle of this embodiment:

[0029] Applying composite materials to the production of flexible contact network cantilever arms replaces traditional metal materials, fundamentally solving the problems of metal corrosion and conductivity. The one-piece molding design reduces the number of connection points (from 8 to 3), lowering the risk of bolt loosening. The equipment weight is halved, significantly improving installation and maintenance efficiency. The insulation distance is greatly increased compared to traditional solutions, and the resistance to environmental interference is significantly enhanced (no need for bird protection or insulating varnish maintenance). The reliability of equipment operation and maintenance efficiency are improved simultaneously.

[0030] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. An integrated insulated cantilever arm device for flexible contact wire in urban rail transit, comprising a single-ear sleeve (1), a fixing component (2), a catenary cable base (3), and a locator (4), characterized in that: It also includes a wrist arm body (5), which is made of composite material. The inside of the wrist arm body (5) adopts a sandwich structure. A single ear sleeve (1) is installed on each of the two ends of the wrist arm body (5). A load-bearing cable base (3) is installed on the upper periphery of the wrist arm body (5) away from the end. A positioning tube (6) is connected to the lower periphery of the wrist arm body (5) away from the end through a fixing member (2). The positioning tube (6) is "Z" shaped. A positioning ring (7) is installed on one end of the positioning tube (6) away from the fixing member (2). A locator (4) is installed on one side of the positioning ring (7).

2. The integrated insulated cantilever arm device for flexible contact network in urban rail transit as described in claim 1, characterized in that: The composite material used in the main body of the wrist arm (5) is a fiber-reinforced resin-based composite material.

3. The integrated insulated cantilever arm device for flexible contact network in urban rail transit as described in claim 1, characterized in that: The interior of the arm body (5) sandwich structure is filled with composite material.

4. The integrated insulated cantilever arm device for flexible contact network in urban rail transit as described in claim 1, characterized in that: The surface of the wrist arm body (5) is coated with an anti-aging coating.

Images