电缆桥架作为电力与信号传输系统的基础设施，其链接件的连接方式直接影响系统的稳定性、性及维护便捷性。根据不同的工程需求与环境条件，电缆桥架链接件形成了多种成熟的连接方案，以下从技术特点与应用场景两方面进行解析。

　　As the infrastructure of power and signal transmission systems, the connection method of cable trays directly affects the stability, safety, and maintenance convenience of the system. According to different engineering requirements and environmental conditions, cable tray connectors have formed various mature connection schemes. The following analysis is based on technical characteristics and application scenarios.

　　一、基础连接方式的技术演进

　　1、 Technological evolution of basic connection methods

　　螺栓固定连接

　　Bolt fixed connection

　　作为传统的连接形态，螺栓固定通过镀锌螺栓与防松垫片组合，利用桥架侧边预留的孔位实现紧固。该方式对施工平整度要求较高，需确保螺栓均匀受力以避免桥架变形。规范要求连接处接触电阻不超过0.1Ω，安装后需用万用表检测电气连续性。此类连接常见于直线段桥架拼接，尤其在需要承受重载的工业场景中表现稳定。

　　As the most traditional form of connection, bolt fixation is achieved through a combination of galvanized bolts and anti loosening washers, utilizing the reserved holes on the side of the bridge frame for fastening. This method requires a high level of construction flatness, ensuring that the bolts are evenly stressed to avoid deformation of the bridge. The specification requires that the contact resistance at the connection should not exceed 0.1 Ω, and a multimeter should be used to check the electrical continuity after installation. This type of connection is commonly used in the splicing of straight cable trays, especially in industrial scenarios where heavy loads need to be withstood, exhibiting stability.

　　卡扣式快速连接

　　Snap on quick connect

　　针对机房扩容等空间受限场景，卡扣式连接采用工程塑料与金属复合材质，通过预制卡槽实现接插式组装。其内部嵌装的弹性导电片可维持电气连通，但需注意环境温度对塑料件的影响。当作业温度超出-15℃60℃范围时，建议改用全金属连接器。此类连接方式显著缩短了施工周期，特别适用于需不停电扩容的敏感区域。

　　For space limited scenarios such as computer room expansion, snap on connections are made of engineering plastic and metal composite materials, and plug-in assembly is achieved through prefabricated card slots. The elastic conductive sheet embedded inside can maintain electrical connectivity, but attention should be paid to the impact of environmental temperature on plastic parts. When the operating temperature exceeds the range of -15 ℃ to 60 ℃, it is recommended to use all metal connectors instead. This type of connection significantly shortens the construction period and is particularly suitable for sensitive areas that require uninterrupted power expansion.

　　二、特殊场景的适应性连接方案

　　2、 Adaptive Connection Scheme for Special Scenarios

　　铰链式活接连接

　　Hinge type flexible joint connection

　　在设备转角或检修口区域，铰链式活接通过旋转轴实现桥架方向转换。其内置的限位装置可固定45°、90°等标准转角，同时集成接地铜排保障等电位连接。安装时需预留充足操作空间，并在转角两端增设固定支架以分散重力。该方案有效解决了复杂布线场景中的方向调整难题。

　　In the equipment corner or access area, hinged joints achieve bridge direction conversion through a rotating shaft. The built-in limit device can fix standard turning angles such as 45 ° and 90 °, while integrating grounding copper bars to ensure equipotential connection. Adequate operating space should be reserved during installation, and fixed brackets should be added at both ends of the corner to disperse gravity. This solution effectively solves the problem of direction adjustment in complex wiring scenarios.

　　伸缩节补偿连接

　　Expansion joint compensation connection

　　针对温度变化引发的热胀冷缩问题，伸缩节由滑动套筒与缓冲垫组成。规范要求直线段桥架超过30米时必须设置此类装置，金属桥架伸缩量按0.2mm/℃·m计算。调试阶段需进行全行程伸缩测试，并涂抹硅脂保持密封橡胶条弹性。该设计在大型公共建筑及跨区域桥架系统中应用广泛。

　　In response to the thermal expansion and contraction caused by temperature changes, the expansion joint is composed of a sliding sleeve and a buffer pad. The specification requires that such devices must be installed when the straight section of the bridge exceeds 30 meters, and the expansion and contraction of the metal bridge shall be calculated at 0.2mm/℃· m. During the debugging phase, a full stroke expansion test is required, and silicone grease is applied to maintain the elasticity of the sealing rubber strip. This design is widely used in large public buildings and cross regional bridge systems.

　　三、创新连接技术的突破应用

　　3、 Breakthrough application of innovative connectivity technology

　　夹持式免工具连接

　　Clamping type tool free connection

　　通过特殊设计的夹持结构，该方式可快速固定不同尺寸的桥架段。其安装效率较传统螺栓连接提升40%，且无需工具即可完成拆卸。夹持力通过机械杠杆原理放大，确保连接强度满足振动环境要求。该技术已应用于数据中心等需要维护的场景。

　　By using a specially designed clamping structure, this method can quickly fix bridge sections of different sizes. Its installation efficiency is 40% higher than traditional bolt connections, and it can be disassembled without the need for professional tools. The clamping force is amplified through the mechanical lever principle to ensure that the connection strength meets the requirements of the vibration environment. This technology has been applied to scenarios such as data centers that require efficient maintenance.

　　模块化组合连接

　　Modular combination connection

　　现代工程常采用混合连接方案，如主干线路使用螺栓连接保证强度，分支线路采用卡扣连接便于调整。关键节点配置铰链活接提升灵活性，形成“刚柔并济”的连接体系。配套的连接件台账管理制度可记录安装时间与检测数据，实现全生命周期追溯。

　　Modern engineering often adopts a hybrid connection scheme, such as using bolt connections to ensure strength for main lines and snap connections for branch lines for easy adjustment. The key nodes are equipped with hinge joints to enhance flexibility and form a connection system that combines rigidity and flexibility. The supporting connector ledger management system can record installation time and testing data, achieving full lifecycle traceability.

　　四、连接技术的选型原则

　　4、 Principles for Selecting Connection Technologies

　　环境适应性

　　Environmental adaptability

　　室外桥架需考虑防水密封，雨季前应检查连接处密封性；腐蚀性环境应选用316不锈钢连接件，并加装防松螺纹胶。

　　Outdoor cable trays need to consider waterproof sealing, and the sealing of connections should be checked before the rainy season; 316 stainless steel connectors should be selected for corrosive environments, and anti loosening thread glue should be added.

　　电气连续性

　　Electrical continuity

　　除镀锌桥架外，其他材质连接需跨接接地线，截面积不小于4mm?。伸缩节等可动部位应采用编织铜线连接，确保等电位要求。

　　Except for galvanized cable trays, connections made of other materials require a cross grounding wire with a cross-sectional area of not less than 4mm?. Flexible parts such as expansion joints should be connected with braided copper wires to ensure equipotential requirements.

　　维护便利性

　　Maintain convenience

　　高频维护区域建议采用免工具连接件，卡扣式设计可缩短50%的检修时间。关键连接点应预留检测窗口，便于红外测温等预防性维护。

　　It is recommended to use tool free connectors in high-frequency maintenance areas, and the snap on design can shorten maintenance time by 50%. Key connection points should have reserved detection windows for preventive maintenance such as infrared temperature measurement.

　　电缆桥架链接件的连接方式已从单一螺栓固定发展为多技术融合的体系。通过科学选型与规范施工，可构建起既满足力学要求又具备电气性的桥架系统，为电力传输提供可靠支撑。随着智能建造技术的发展，具备自感知功能的智能连接件将成为新的发展方向。

　　The connection method of cable tray connectors has evolved from single bolt fixation to a multi technology integrated system. Through scientific selection and standardized construction, a bridge system that meets both mechanical requirements and electrical safety can be constructed, providing reliable support for power transmission. With the development of intelligent construction technology, intelligent connectors with self sensing functions will become a new direction of development.

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