拉绳开关XTD-PK 供应
产品概述
拉绳开关XTD-PK是一种专为输送机系统设计的紧急停机保护装置，适用于皮带输送机、斗式提升机、堆料/取料系统等多种设备。当现场发生紧急事故时，可通过拉动沿线安装的钢丝绳快速触发开关，实现设备紧急停机，有效保护人身安全和设备完整性。该产品采用双向触动设计，既可安装在输送机中间位置，也可置于两端，安装灵活。外壳采用高强度铸铝材质，具备防风雨特性，适应恶劣环境长期使用。15
结构与性能特点
XTD-PK采用双轴承传动结构和不锈钢操作杆设计，确保动作灵敏且耐磨损。内部配置自清洁触点微动开关，触点额定值为16A/250V AC，提供二常开二常闭触点组合。外壳防护等级达IP65，能有效防止粉尘和流水侵蚀，适用于-20℃~+60℃的工作环境。产品附带钢丝绳、绳夹及支撑螺栓等完整配件，安装时需每隔3米设置托环支撑钢丝绳，水平最大间距为40米，倾斜工况下为30米，以保持张力均衡。124
应用场景
该开关广泛应用于冶金、煤炭、水泥、电力、港口及化工等行业的散料输送设备中，如常规皮带输送机、梭式输送机、轮船装卸系统等。其双向触发机制允许从任意位置拉动钢丝绳发送停机信号，尤其适合需要快速响应事故的长距离输送场景。例如，在矿山或电厂中，可沿输送机两侧布置多组XTD-PK开关，形成全覆盖的安全保护网络。2611
安装与维护
安装时需将开关固定于输送机两侧检修通道附近，确保操作便捷。钢丝绳需采用直径Φ4mm的涂塑材质，并通过紧线器调整松紧度。维护时需定期清洁外壳，避免粉尘堆积超过3mm厚度。对于爬坡段输送机，建议缩短开关间距以降低钢丝绳自重影响。产品无需额外润滑，整体式盖板设计便于接线和调整，无需拆卸开关即可完成日常检查。4626
产品优势
XTD-PK以高稳定性和长寿命为核心优势，微动开关机械寿命达50万次，动作角度为15°~75°可调。铸铝壳体经特殊表面处理，兼具轻量化与抗腐蚀性能。其醒目的颜色设计（黑色臂杆搭配黄色/银色外壳）便于识别工作状态。手动杠杆复位功能可锁定停机位置，防止误启动，进一步提升检修安全性。2426
English Product Description
Product Overview
The XTD-PK pull-wire switch is an emergency stop protection device designed for conveyor systems, including belt conveyors, bucket elevators, and stacking/reclaiming systems. In case of emergencies, pulling the installed wire rope along the equipment will immediately trigger the switch to halt operation, ensuring personnel safety and preventing mechanical damage. Its bidirectional activation allows flexible installation at both intermediate or terminal positions of the conveyor. The durable cast aluminum housing provides weather resistance for long-term use in harsh environments.
Design & Features
Equipped with a dual-bearing transmission mechanism and stainless steel lever, the XTD-PK ensures responsive actuation and wear resistance. It integrates self-cleaning micro-switches with contacts rated at 16A/250V AC (2NO+2NC). The IP65-rated housing effectively blocks dust and water ingress, suitable for temperatures ranging from -20℃ to +60℃. Complete accessories include galvanized wire ropes, clamps, and support bolts. Installation requires rope supports every 3 meters, with max span distances of 40m (horizontal) or 30m (inclined).
Applications
Ideal for bulk material handling in industries like metallurgy, mining, cement, and power plants, this switch is compatible with diverse equipment such as shuttle conveyors and ship loaders. Its bidirectional trigger enables emergency stops from any point along the conveyor line, making it critical for long-distance transport safety. For example, multiple XTD-PK units can be deployed along both sides of conveyors in mining sites to create a comprehensive safety network.
Installation & Maintenance
Mount the switch on accessible brackets near conveyor walkways. Use Φ4mm plastic-coated wire ropes tensioned via turnbuckles. Regular maintenance involves cleaning the housing to prevent dust accumulation exceeding 3mm. For inclined conveyors, closer switch spacing is recommended to offset rope sag. The tool-free cover design simplifies wiring adjustments without disassembly.
Key Advantages
The XTD-PK offers exceptional reliability with a mechanical lifespan exceeding 500,000 cycles and adjustable actuation angles (15°~75°). The lightweight yet corrosion-resistant aluminum housing features high-visibility color coding (black arm/yellow body) for status identification. Manual lever reset functionality locks the stop position to prevent accidental restarts during maintenance.
All technical descriptions are based on standard product configurations and may vary per project requirements. 1426
拉绳开关
JKPT1，JKPT2，JLK2-S，JLK3-S，JSB-KPP，JY3/PK-12-30，JJLK1-AW，JSB/KLS-1，JSB/KLS-2，JSB/KPP-12-30，JSB/KPP12-30，LP2-2，LL-A，LX-52，LXA-01GKH-T1-A，LXA-01GKH-T2-A，LXA-02GKH-T1-F，LXA-02GKH-T2-F，LXA-02GKH-T2-A，LS-I，LS-II，L18-1A，PK-10-45，PLS，SPS-2D，SLSFT2系列，XDFL2-ZS，XLLS-D，XTD-LS，XTD-PK，XTD-SH，XTD-SJ，XDT-SL，XTD-ZL，YLXA-10A，YH25-1，YLSD-2，ZS71，ZS73，ZS75，HFKLT2系列，GYLS-I，GRB-19150，GRB-17088，GRB-19670，FKLT2系列，DLK2-15AD-H，DLK2-15B-H，DLK2-15A ,，BLK-2，BLK-1，
拉绳开关（Pull Cord Switch）俗称“紧急停机开关”。作用于带式输送现场需要停机时，通过开关动作使输送机停机。
适用范围：
拉绳开关广泛用于冶金、煤炭、水泥、采矿、电力、港埠、化工等域的各种专门从事散料输送的输送设备。
简介
拉绳开关分为手动复位和自动复位两种，需要达到国家规定IP等级。
自动复位：动作后后能自动回到初始位置，可能会造成误差启动。
手动复位：动作后有自锁装置能保持在操作位置上，需要手动操作复位手柄可使其返回初始位置。
拉绳开关是带式输送机必备的安全保护装置，防止事故的扩大而带来重大损失。由于安装方便,开关转换可靠,在带式运输现场得到广泛的应用。
结构和基本原理
拉绳开关由拉杆、复位柄、凸轮、锁槽及微动开关等组成。
拉绳开关安装于皮带输送机的两侧的机架上，用钢丝绳沿着输送机两侧把开关连接起来。当输送带设备发生紧急事故时，在现场沿线任意处拉动钢丝绳，钢丝绳牵动驱动臂旋转，通过传动轴带动扭力弹簧使精密凸轮发生位移，驱动微动开关切断控制线路，使得输送机停止运行。
安装和调整
拉绳开关应安装在输送机两边具有检修通道的地方，安装位置应确保检修人员在紧急情况下操作方便。
1、将拉绳开关固定在机架上。
2、一侧的两台开关之间距离为50m左右，采用直径为Φ4的钢丝绳连接，松紧应适度。
3、为减小钢丝绳自重对开关启动的影响，每隔3m在机架上装一个托环，以支撑钢丝绳。
4、钢丝绳的另一端系在拉簧上(用绳扣固定),在不影响正常使用下用紧线器将两侧拉绳张紧,并确保两侧张力均衡。
（注：对于爬坡段输送机机.应尽量缩短开关间距及拉绳长度。）
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