{"id":8495,"date":"2025-12-23T20:12:26","date_gmt":"2025-12-23T12:12:26","guid":{"rendered":"https:\/\/www.hnhlcranes.com\/?post_type=product&#038;p=8495"},"modified":"2025-12-23T22:21:39","modified_gmt":"2025-12-23T14:21:39","slug":"crane-overload-limiter-2","status":"publish","type":"product","link":"https:\/\/www.hnhlcranes.com\/en_au\/product\/crane-overload-limiter-2\/","title":{"rendered":"Crane overload limiter"},"content":{"rendered":"<div class=\"flex-1 overflow-hidden\">\n<div class=\"h-full\">\n<div class=\"react-scroll-to-bottom--css-fbdqh-79elbk h-full\">\n<div class=\"react-scroll-to-bottom--css-fbdqh-1n7m0yu\">\n<div class=\"flex flex-col text-sm md:pb-9\">\n<article class=\"w-full scroll-mb-[var(--thread-trailing-height,150px)] text-token-text-primary focus-visible:outline-2 focus-visible:outline-offset-[-4px]\" dir=\"auto\" data-testid=\"conversation-turn-17\" data-scroll-anchor=\"true\">\n<div class=\"m-auto text-base py-[18px] px-3 md:px-4 w-full md:px-5 lg:px-4 xl:px-5\">\n<div class=\"mx-auto flex flex-1 gap-4 text-base md:gap-5 lg:gap-6 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem]\">\n<div class=\"group\/conversation-turn relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex-col gap-1 md:gap-3\">\n<div class=\"flex max-w-full flex-col flex-grow\">\n<div class=\"min-h-8 text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words text-start [.text-message+&amp;]:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"6538a722-2ad3-40cd-9770-c47786dcb06e\" data-message-model-slug=\"gpt-4o\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<div class=\"flex max-w-full flex-col flex-grow\">\n<div class=\"min-h-8 text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words text-start [.text-message+&amp;]:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"4161658d-c029-4f43-843c-307ecec1274a\" data-message-model-slug=\"gpt-4o\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<h3><strong>Environmental Suitability <\/strong>of Crane Overload Limiter<\/h3>\n<ol>\n<li><strong>High and Low Temperature Environments:<\/strong>\n<ul>\n<li>Crane overload limiters are capable of operating reliably in a wide temperature range, typically from -40\u00b0C to +85\u00b0C, making them suitable for both high and low-temperature conditions.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Moist and Waterproof Environments:<\/strong>\n<ul>\n<li>These limiters typically have an IP65 or higher protection rating, preventing water and dust from entering the device. This makes them ideal for use in humid, dusty, or harsh weather conditions.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h3><strong>Main Functions <\/strong>of Crane Overload Limiter<\/h3>\n<ol>\n<li><strong>Load Monitoring and Overload Prevention:<\/strong>\n<ul>\n<li>The overload limiter continuously monitors the load on the hook and compares it to the crane&#8217;s rated capacity. If the load exceeds the safe limit, the system automatically restricts further lifting operations.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Automatic Alarm:<\/strong>\n<ul>\n<li>When the load approaches or exceeds the safety threshold, the system triggers an alarm, including audible and visual signals, alerting the operator to take corrective action and preventing further overload.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Operational Protection:<\/strong>\n<ul>\n<li>The overload limiter can interact with the crane&#8217;s control system to automatically reduce the lifting speed or completely halt further lifting operations, preventing damage to the equipment or safety hazards caused by overloading.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Data Storage and Analysis:<\/strong>\n<ul>\n<li>The limiter is usually equipped with data storage capabilities, allowing it to record historical load data, alarm information, and other operational details. This helps with post-operation analysis, diagnostics, and maintenance. Some models also support remote monitoring and data downloading.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Remote Control and Alerts:<\/strong>\n<ul>\n<li>Some models offer remote monitoring and control functions, enabling operators or managers to view load data and alarm information from a distance, improving overall safety during crane operations.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h3><strong>Working Principle<\/strong><\/h3>\n<ol>\n<li><strong>Load Measurement:<\/strong>\n<ul>\n<li>The crane overload limiter uses sensors, such as pressure sensors, tension sensors, or displacement sensors, to measure the load on the hook in real-time. The sensors send this data to the control system for processing.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Data Processing and Comparison:<\/strong>\n<ul>\n<li>Once the control system receives the sensor data, it compares the current load with the preset safety limit. If the load exceeds the limit, the system immediately triggers the alarm and activates the protective mechanism.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Alarm and Protection Mechanism:<\/strong>\n<ul>\n<li>When the load exceeds the safe threshold, the system activates the audible and visual alarm to warn the operator. Simultaneously, it automatically takes actions such as slowing down the lifting speed or halting further lifting to prevent equipment damage or safety incidents.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Real-Time Monitoring and Recording:<\/strong>\n<ul>\n<li>The overload limiter displays real-time load data on a screen and records historical data for later review. Some advanced models can transmit data remotely to a monitoring center, allowing for continuous observation by the operator or management team.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Adjustment and Optimization:<\/strong>\n<ul>\n<li>Some high-end overload limiters feature intelligent adjustment capabilities. They automatically adjust the load limit based on the changing working conditions, ensuring the crane always operates within the safety range.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h6><strong><span style=\"font-family: arial, helvetica, sans-serif; font-size: 18pt;\">Conclusion<\/span><\/strong><\/h6>\n<p>The <strong>QCX Crane Overload Limiter<\/strong> is an indispensable safety mechanism for double-girder cranes. By offering accurate load monitoring, reliable alarms, and automatic motor cutoffs, it minimizes risks associated with overloading and contributes significantly to modern industrial safety standards.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div><span style=\"font-family: var(--global-body-font-family);\">Sensors with shaft housings and bases, combined with QCX-M type instruments, are the most commonly used form of lifting weight limiters. The dimensions of standard products are shown in the following table. For example, the order model is: &#8220;QCX-M-4-20t\/170-320&#8221;.<\/span><\/div>\n<div><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-7540\" src=\"https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-7-300x188.jpg\" alt=\"\" width=\"962\" height=\"603\" srcset=\"https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-7-300x188.jpg 300w, https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-7-768x482.jpg 768w, https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-7-600x377.jpg 600w, https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-7.jpg 1000w\" sizes=\"(max-width: 962px) 100vw, 962px\" \/><\/div>\n<div>\n<p>&nbsp;<\/p>\n<p>Sensors for large tonnage limiters are generally customized according to user drawings. The series dimensions in the following table are summarized based on the order drawings of major Chinese crane manufacturers for reference when new users order or design non-standard products.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-7541\" src=\"https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-8-300x206.jpg\" alt=\"\" width=\"990\" height=\"680\" srcset=\"https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-8-300x206.jpg 300w, https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-8-768x528.jpg 768w, https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-8-600x413.jpg 600w, https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-8.jpg 1000w\" sizes=\"(max-width: 990px) 100vw, 990px\" \/><\/p>\n<p>HLF-3A series sensors consist of two parts: sensors and pads. They are mainly installed under the two ends of the fixed pulley shaft of the crane to withstand the pressure generated by the pulley block. Generally, two sensors are used in a group. They are often used in occasions with relatively high measurement accuracy requirements, such as crane electronic scales.<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<div><img decoding=\"async\" class=\"alignnone wp-image-7542\" src=\"https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-HLF-300x187.jpg\" alt=\"\" width=\"977\" height=\"609\" srcset=\"https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-HLF-300x187.jpg 300w, https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-HLF-768x479.jpg 768w, https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-HLF-600x374.jpg 600w, https:\/\/www.hnhlcranes.com\/wp-content\/uploads\/2024\/12\/Crane-overload-limiter-HLF.jpg 1000w\" sizes=\"(max-width: 977px) 100vw, 977px\" \/><\/div>","protected":false},"excerpt":{"rendered":"<h6><strong><span style=\"font-family: arial, helvetica, sans-serif; font-size: 14pt;\">Main parameters:<\/span><\/strong><\/h6>\n<ul>\n<li>Accuracy \u22645%F.S.<\/li>\n<li>90% warning, 105% alarm<\/li>\n<li>130% immediate control, output a set of relay contacts<\/li>\n<li>Capacity 10A, 380V<\/li>\n<li>Power supply voltage AC380V or 220V\/50Hz<\/li>\n<li>Ambient temperature -20\uff5e+60\u2103\/90%RH<\/li>\n<li>Protection level sensor IP65,<\/li>\n<li>Instrument IP42<\/li>\n<\/ul>","protected":false},"featured_media":7543,"template":"","meta":{"_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"show","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"product_brand":[],"product_cat":[65],"product_tag":[632,622,376,634,612,616,626,627,629,613,617,620,615,614,618,628,619,621,623,630,635,633,625,631,624],"class_list":{"0":"post-8495","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-crane-electrical-parts","7":"product_tag-aviation-plug","8":"product_tag-cable-trolley","9":"product_tag-china-crane-parts-supplier","10":"product_tag-crane-aviation-plug","11":"product_tag-crane-cable-trolley","12":"product_tag-crane-control-cabinet","13":"product_tag-crane-control-handle","14":"product_tag-crane-controls","15":"product_tag-crane-electrical-control-cabinet","16":"product_tag-crane-electrical-part","17":"product_tag-crane-limit-switch","18":"product_tag-crane-overload-limiter","19":"product_tag-crane-pendant-controller","20":"product_tag-crane-remote-controller","21":"product_tag-crane-sound-and-light-alarm","22":"product_tag-electrical-control-cabinet","23":"product_tag-heavy-duty-aviation-connector","24":"product_tag-i-beam-cable-trolley","25":"product_tag-i-beam-cable-trolley-supplier","26":"product_tag-limit-switch","27":"product_tag-overload-limiter","28":"product_tag-quick-connector","29":"product_tag-remote-controller","30":"product_tag-sound-and-light-alarm","31":"product_tag-wireless-remote-control","33":"first","34":"instock","35":"shipping-taxable","36":"product-type-simple","37":"entry","38":"content-bg","39":"loop-entry"},"yoast_head":"<!-- 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