{"id":16016,"date":"2026-09-11T09:19:12","date_gmt":"2026-09-11T09:19:12","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=16016"},"modified":"2026-09-11T09:19:24","modified_gmt":"2026-09-11T09:19:24","slug":"ladle-overhead-crane-components-and-accessories","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/tr\/posts\/ladle-overhead-crane-components-and-accessories\/","title":{"rendered":"Ladle Overhead Crane Components and Accessories"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>\u0130\u00e7indekiler<\/p><nav><ul><li><a href=\"#1-motor\">1. Motor<\/a><\/li><li><a href=\"#2-reducer\">2. Reducer<\/a><\/li><li><a href=\"#3-brakes\">3. Brakes<\/a><\/li><li><a href=\"#4-crane-drum-assembly\">4. Crane Drum Assembly<\/a><\/li><li><a href=\"#5-fixed-sheave-assembly-and-wire-rope-equalizer\">5. Fixed Sheave Assembly and Wire Rope Equalizer<\/a><\/li><li><a href=\"#6-crane-couplings\">6. Crane Couplings<\/a><\/li><li><a href=\"#7-wire-rope\">7. Wire Rope<\/a><\/li><li><a href=\"#8-overload-limiter-electronic-scale-used-when-high-accuracy-is-required\">8. Overload Limiter (Electronic Scale Used When High Accuracy Is Required)<\/a><\/li><li><a href=\"#9-lifting-height-limiter\">9. Lifting Height Limiter<\/a><\/li><li><a href=\"#10-heavy-hammer-limit-switch\">10. Heavy-Hammer Limit Switch<\/a><\/li><li><a href=\"#11-overspeed-switch\">11. Overspeed Switch<\/a><\/li><li><a href=\"#12-hook-assembly\">12. Hook Assembly<\/a><\/li><li><a href=\"#13-lifting-spreader\">13. Lifting Spreader<\/a><\/li><li><a href=\"#14-electric-hoist\">14. Electric Hoist<\/a><\/li><li><a href=\"#15-wheel-assembly\">15. Wheel Assembly<\/a><\/li><li><a href=\"#16-horizontal-guide-wheel-device-configured-per-contract\">16. Horizontal Guide Wheel Device (Configured per Contract)<\/a><\/li><li><a href=\"#17-crane-buffer\">17. Crane Buffer<\/a><\/li><li><a href=\"#18-operators-cabin\">18. Operator&#8217;s Cabin<\/a><\/li><li><a href=\"#19-electrical-room\">19. Electrical Room<\/a><\/li><li><a href=\"#20-electrical-house-configured-per-contract-or-design\">20. Electrical House (Configured per Contract or Design)<\/a><\/li><li><a href=\"#21-air-conditioning-system\">21. Air Conditioning System<\/a><\/li><li><a href=\"#22-fire-protection-equipment\">22. Fire Protection Equipment<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1319\" height=\"879\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/ladle-overhead-crane.png\" alt=\"\" class=\"wp-image-16088\"\/><\/figure>\n\n\n\n<p>bu <a href=\"https:\/\/www.hndfcrane.com\/tr\/ladle-overhead-cranes\/\">kep\u00e7eli gezer vin\u00e7<\/a> is one of the key pieces of equipment in the steelmaking process. A ladle crane is made up of four major parts: the bridge, the trolley (including the lifting spreader), the crane traveling mechanism, and the electrical equipment.<\/p>\n\n\n\n<p>Although a ladle overhead crane may look complex, it is actually assembled in an orderly way from a set of common ladle overhead crane components, each with a dedicated function \u2014 none of which can be omitted. From a design perspective, this article breaks down the main components and accessories used on a ladle overhead crane and explains the function and key design points of each, helping you build a complete design understanding.<\/p>\n\n\n\n<p>The accessories listed below are the Chinese-made accessories commonly used on ladle overhead cranes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-motor\">1. Motor<\/h2>\n\n\n\n<p>YZR series three-phase asynchronous motors are suitable for crane, metallurgical, and other similar equipment. The motor has a wound rotor and features high overload capacity and high mechanical strength; it is used in conventional control circuits, stator voltage-regulation speed-control circuits, and similar applications.<\/p>\n\n\n\n<p>The YZB, YTSZ, YZP, and YZP2 series are variable-frequency three-phase asynchronous motors suitable for crane, metallurgical, and other similar equipment. They feature high efficiency, a wide speed-regulation range, good accuracy, stable starting and braking, and high overload capacity; they are used in variable-frequency speed-control circuits.<\/p>\n\n\n\n<p>The motor&#8217;s insulation class and degree of protection are determined by the working environment or contract requirements. As required, additional devices such as thermal protectors, heaters, encoders, and overspeed switches can be fitted to meet different service requirements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-reducer\">2. Reducer<\/h2>\n\n\n\n<p>Involute cylindrical-gear reducers are generally used, and some are combined with other gears. Ladle overhead cranes typically use medium-hard or hard tooth-face reducers, selected according to contract requirements.<\/p>\n\n\n\n<p>Reducer mounting types include integral, base-mounted, three-point, and vertical. The output shaft generally uses a flat-key shaft, spline shaft, or geared output shaft. For the types of connection between the drum and the reducer output shaft, see Section 4, &#8220;Drum Assembly.&#8221; When the main hoisting mechanism has two rigidly coupled drive units, the electrical drive uses no speed-control system, or contract requirements call for it, the main hoisting reducer is generally fitted with a ratchet and pawl mechanism.<\/p>\n\n\n\n<p>An integral reducer means the reducer&#8217;s lower housing is welded directly to the trolley frame as one piece, and it also acts as a load-bearing member of the trolley.<\/p>\n\n\n\n<p>Reducer lubrication directly affects its service life; the oil level can be checked through an oil-level sight point. A drain port at the bottom of the reducer makes it easy to change the lubricating oil.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1248\" height=\"832\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Integral-large-reducer.png\" alt=\"\" class=\"wp-image-16056\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-brakes\">3. Brakes<\/h2>\n\n\n\n<p>Crane brakes are usually normally-closed brakes. Each hoisting mechanism is provided with two brakes (service brakes), and some also require a safety brake on the drum; each traveling mechanism has one brake.<\/p>\n\n\n\n<p>Under normal operation, the safety brake stays energized and open as long as the crane main power is on. If a crane power-supply fault, a shaft break in the main hoisting mechanism, or an overspeed accident occurs, the safety brake applies after the service brake.<\/p>\n\n\n\n<p>The brake is an important component of the equipment. Its braking torque should be adjusted according to the drawing requirements (traveling mechanisms may be adjusted as appropriate according to usage) to ensure the crane operates safely and normally.<\/p>\n\n\n\n<p>Commonly used series include YWZ, YW, YWB, YWZE, YWZA~F, YWK, YWL, and YWH AC electro-hydraulic shoe brakes; YPZ and YP AC electro-hydraulic disc brakes; DCPZ AC electromagnetic disc brakes; and SB and SBD hydraulic safety brakes.<\/p>\n\n\n\n<p>According to contract and service needs, the brake can be fitted with manual release, automatic wear compensation, a wear-limit indicating limit switch, a brake-open (or brake-closed) limit switch, and other devices.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2000\" height=\"593\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Brake-Outline-Drawing-1.png\" alt=\"\" class=\"wp-image-16057\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Brake-Outline-Drawing-1.png 2000w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Brake-Outline-Drawing-1-1536x455.png 1536w\" sizes=\"(max-width: 2000px) 100vw, 2000px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2000\" height=\"685\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Brake-Outline-Drawing-2.png\" alt=\"\" class=\"wp-image-16060\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Brake-Outline-Drawing-2.png 2000w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Brake-Outline-Drawing-2-1536x526.png 1536w\" sizes=\"(max-width: 2000px) 100vw, 2000px\" \/><\/figure>\n\n\n\n<p>Figure 2-18 shows the outline of the YWZ AC electro-hydraulic block brake. Figure 2-19 shows the outline of the JZ AC electromagnetic block brake. Figure 2-20 shows the outline of the ZWZ DC electromagnetic block brake. Figure 2-21 shows the outline of the YPZ AC electro-hydraulic disc brake. Figure 2-22 shows the outline of the AC electromagnetic disc brake. Figure 2-23 shows the outline of the SBD hydraulic disc safety brake.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-crane-drum-assembly\">4. Crane Drum Assembly<\/h2>\n\n\n\n<p>Ladle overhead cranes mostly use steel-plate drums. A clamp plate for securing the wire rope is provided on the drum. The drum support generally carries the overload-limiter sensor, while the lifting-height limiter is driven by the drum&#8217;s output shaft. The installation error of the drum centerline should be less than the drawing requirement.<\/p>\n\n\n\n<p>When the load-handling device rises to the set upper-limit height, one empty groove should remain on the drum; when it lowers to the set lower-limit position, at least two turns of wire rope, in addition to the turns used to secure the rope, should remain on the drum.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2116\" height=\"743\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Drum-assembly-example.png\" alt=\"\" class=\"wp-image-16085\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Drum-assembly-example.png 2116w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Drum-assembly-example-1536x539.png 1536w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Drum-assembly-example-2048x719.png 2048w\" sizes=\"(max-width: 2116px) 100vw, 2116px\" \/><figcaption class=\"wp-element-caption\">Figure 4 Drum assembly example<\/figcaption><\/figure>\n\n\n\n<p>The drum is generally connected to the reducer through a drum spherical-joint coupling or a roller coupling; a geared connection disc may also be used as required by contract or design. Figure 4 shows an example of a drum assembly, in which the reducer&#8217;s spline output shaft drives the drum through a WZL drum spherical-joint coupling; the reducer&#8217;s geared output shaft can drive the drum through a geared connection disc. The drum spherical-joint coupling or roller coupling, the geared connection disc, and the bearings are lubricated with grease.<\/p>\n\n\n\n<p>The drum is rotated by the reducer output shaft, and the drum uses the corresponding connection method according to the reducer output shaft. When the reducer has a flat-key output shaft, it can be connected to the drum through a geared connection disc or through a WZL drum spherical-joint coupling.<\/p>\n\n\n\n<p>On most ladle overhead cranes the main hoisting mechanism has two lifting points and the hoisting mechanism has two drums, but the drum-to-reducer connections are still covered by the examples above.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-fixed-sheave-assembly-and-wire-rope-equalizer\">5. Fixed Sheave Assembly and Wire Rope Equalizer<\/h2>\n\n\n\n<p>The number of sheaves in the fixed sheave assembly corresponds to the hoisting reeving ratio, and rolled sheaves are used. The main hoisting mechanism&#8217;s wire-rope reeving system uses a combination of a wire rope equalizer and a sheave assembly; the auxiliary hoisting mechanism generally uses a fixed sheave assembly, and it may also use a combination of a wire rope equalizer and a sheave assembly.<\/p>\n\n\n\n<p>For a hoisting mechanism using a wire rope equalizer, the equalizer should be kept essentially level when installing or replacing the wire rope; and if the equalizer tilts significantly after a load has been lifted, it should be adjusted to obtain a better service condition. The equalizer must never be caught by a support bracket over the full up-and-down hoisting travel.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2000\" height=\"937\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Wire-rope-equalizer-and-fixed-sheave-assembly-combination.png\" alt=\"\" class=\"wp-image-16061\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Wire-rope-equalizer-and-fixed-sheave-assembly-combination.png 2000w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Wire-rope-equalizer-and-fixed-sheave-assembly-combination-1536x720.png 1536w\" sizes=\"(max-width: 2000px) 100vw, 2000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6-crane-couplings\">6. Crane Couplings<\/h2>\n\n\n\n<p>The couplings of the crane mechanisms are usually gear couplings or universal couplings. These couplings feature reliable operation, high transmission capacity, and large allowable displacement. The connection between the coupling and a cylindrical shaft uses a keyed interference fit.<\/p>\n\n\n\n<p>A gear coupling transmits torque through its internal and external teeth and compensates displacement through tooth clearance. The allowable angular displacement is generally 0\u00b030\u2032 for ordinary teeth and 1\u00b030\u2032 for crowned teeth. Gear couplings are generally lubricated with lithium-based grease.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2000\" height=\"750\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Gear-coupling.png\" alt=\"\" class=\"wp-image-16063\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Gear-coupling.png 2000w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Gear-coupling-1536x576.png 1536w\" sizes=\"(max-width: 2000px) 100vw, 2000px\" \/><\/figure>\n\n\n\n<p>A universal coupling may be used when required by contract or when the angular displacement is large. The maximum allowable angular displacement of a cross-type universal coupling can exceed 10\u00b0. The coupling bearings are lubricated with lithium-based grease. Bolts should be tightened to the specified torque according to the supplied drawings, and their tightness must be checked regularly.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2000\" height=\"780\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Universal-coupling.png\" alt=\"\" class=\"wp-image-16062\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Universal-coupling.png 2000w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Universal-coupling-1536x599.png 1536w\" sizes=\"(max-width: 2000px) 100vw, 2000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"7-wire-rope\">7. Wire Rope<\/h2>\n\n\n\n<p>Wire ropes for ladle overhead cranes should be metal-wire-rope-core or metal-wire-strand-core wire ropes conforming to GB\/T 8918. Linear-contact wire ropes are generally used, and the wire rope safety factor conforms to GB\/T 3811 or contract requirements. For applications subjected to high-temperature baking, a metal-wire-rope-core or metal-wire-strand-core wire rope should be used.<\/p>\n\n\n\n<p>The wire rope is selected according to its type, wire strength, diameter, core material, wire surface condition, and wire grade.<\/p>\n\n\n\n<p>The wire rope must be lubricated correctly and on schedule. A wire-rope oiler can also be added as required.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"8-overload-limiter-electronic-scale-used-when-high-accuracy-is-required\">8. Overload Limiter (Electronic Scale Used When High Accuracy Is Required)<\/h2>\n\n\n\n<p>The overload limiter consists of a sensor and an instrument box. The display is generally installed in the operator&#8217;s cabin (a large-screen display can also be added at the user&#8217;s request) to prevent overloading. When a load is lifted, the strain sensor converts the deformation caused by the load into a proportional voltage signal, completing the load-to-voltage conversion.<\/p>\n\n\n\n<p>When the lifted load reaches 90% of the rated load, the overload limiter emits an intermittent alarm; when the lifted load is 100%\u2013110% of the rated load, it cuts off the hoisting power source while still allowing the mechanism to lower. The system error is generally no more than \u00b15% (FS).<\/p>\n\n\n\n<p>Three sensor types can be selected: bearing-housing type (2-30), fixed-sheave type (2-31), and axle-pin type (2-32).<\/p>\n\n\n\n<p>The bearing-housing sensor is the most commonly used. Fixed-sheave sensors are generally used in pairs, one at each end of the fixed-sheave shaft. The axle-pin sensor replaces the sheave shaft and also functions as the sensor.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1500\" height=\"854\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Overload-limiter-sensors.png\" alt=\"\" class=\"wp-image-16067\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"9-lifting-height-limiter\">9. Lifting Height Limiter<\/h2>\n\n\n\n<p>The lifting-height limiter is a safety device that limits the lifting height. It is generally installed at the end of the drum shaft, converts the drum rotation into the corresponding lifting height, and provides multiple sets of control contacts to the hoisting control circuit; by adjusting the positions of these contacts, the upward or downward height is controlled.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1500\" height=\"867\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/QGX-lifting-height-limiter.png\" alt=\"\" class=\"wp-image-16068\"\/><\/figure>\n\n\n\n<p>The figure shows a QGX lifting-height limiter. The upper drawing shows the square hole at the drum shaft end fitted over the limiter&#8217;s square output shaft, and the lower drawing is a sectional view of the limiter. To adjust the upward or downward height, remove housing 6, turn nut 4, and adjust the offset angle between cam 5 and limit switch 3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"10-heavy-hammer-limit-switch\">10. Heavy-Hammer Limit Switch<\/h2>\n\n\n\n<p>The heavy-hammer limit switch is a safety device that limits the extreme lifting height of the load-handling device, and it is selected according to contract or design requirements. The limit switch is mounted on the trolley frame, and the ring on the heavy hammer is fitted over the hoisting wire rope. When the load-handling device rises to the upper limit, it touches the heavy hammer, the hammer&#8217;s support rope loses tension, the limit switch operates, and the power is cut off.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1500\" height=\"910\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/LX33-heavy-hammer-limit-switch.png\" alt=\"\" class=\"wp-image-16069\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"11-overspeed-switch\">11. Overspeed Switch<\/h2>\n\n\n\n<p>The overspeed switch is installed inside the hoisting motor or in another position to limit motor overspeed and ensure safe operation. (The overspeed switch is already adjusted at the factory; do not adjust it arbitrarily.)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"12-hook-assembly\">12. Hook Assembly<\/h2>\n\n\n\n<p>The hook assembly is the most widely used load-handling device on a crane.<\/p>\n\n\n\n<p>Hook assemblies include ordinary hook assemblies and electric rotating hook assemblies (selected as specified by contract). By manufacturing method, hooks are divided into forged hooks (2-33) and laminated plate hooks (2-34) (formed by stacking several hook-shaped steel plates and connecting them with rivets); by hook throat form, they are divided into single hooks and double hooks, which the user can select as needed. The hook assembly is fitted with an anti-unhooking device, and the bearings in the hook assembly can be lubricated through oil cups.<\/p>\n\n\n\n<p>Depending on the hook assembly structure, the wire rope has different reeving methods; the wire rope should be reeved correctly according to the supplied drawings.<\/p>\n\n\n\n<p>The hook of an ordinary hook assembly can generally be rotated by manual pushing. When the hook must not rotate, a locking device can be added.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1179\" height=\"500\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Hook-assembly.png\" alt=\"\" class=\"wp-image-16074\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"13-lifting-spreader\">13. Lifting Spreader<\/h2>\n\n\n\n<p>The lifting spreader of a ladle overhead crane is divided into two structural forms \u2014 inseparable and separable spreaders \u2014 with the following three specific cases:<\/p>\n\n\n\n<p>a) Inseparable spreader I: the main hoisting wire rope directly suspends a lifting beam with two laminated hooks, that is, the spreader is a fixed gantry hook; this is generally used on steelmaking-plant ladle overhead cranes.<\/p>\n\n\n\n<p>b) Inseparable spreader II: the hook of the main hoisting mechanism directly carries molten metal.<\/p>\n\n\n\n<p>c) Separable spreader: a lifting beam with laminated (or forged) hooks is suspended on the (single or double) hook of the main hoisting mechanism.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"14-electric-hoist\">14. Electric Hoist<\/h2>\n\n\n\n<p>A fixed electric hoist is sometimes used as the auxiliary hoisting mechanism, in which case the hoist is generally installed on the trolley; an electric-trolley-type electric hoist generally runs on the rail below the main girder as an auxiliary hoisting mechanism.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"15-wheel-assembly\">15. Wheel Assembly<\/h2>\n\n\n\n<p>Wheels are designed and manufactured according to the JB\/T 6392 crane wheel standard, and forged or rolled wheels are mostly used. The hardness of the finished tread and the inner face of the flange is HB300\u2013380; for a wheel diameter smaller than 400 mm, the hardness at a radial (normal) depth of about 15 mm is no less than HB260, and for a wheel diameter larger than 400 mm, the hardness at a radial (normal) depth of about 20 mm is no less than HB260.<\/p>\n\n\n\n<p>The bearing housings of a wheel assembly generally use angle-type bearing housings, 45\u00b0 split bearing housings, or U-shaped bearing housings (see the figure below).<\/p>\n\n\n\n<p>The bearings in the wheel assembly are lubricated with grease.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1832\" height=\"858\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Wheel-assembly-bearing-housing-types.png\" alt=\"\" class=\"wp-image-16071\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Wheel-assembly-bearing-housing-types.png 1832w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Wheel-assembly-bearing-housing-types-1536x719.png 1536w\" sizes=\"(max-width: 1832px) 100vw, 1832px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"16-horizontal-guide-wheel-device-configured-per-contract\">16. Horizontal Guide Wheel Device (Configured per Contract)<\/h2>\n\n\n\n<p>A set of horizontal guide wheel devices is arranged at each end of the end carriage on one side of the crane bridge to prevent rail skewing during crane travel. The structure of the horizontal guide wheel device is shown in the figure below.<\/p>\n\n\n\n<p>The horizontal guide wheel device can adjust the clearance between the two guide wheels and the rail, to compensate for guide-wheel wear or to adjust the relative position. The guide wheel shaft is an eccentric shaft; the eccentric shaft can be rotated through a certain angle and, once the requirement is met, fixed with a bolt clamping plate. The horizontal position of the guide wheel can be adjusted by \u00b15 mm.<\/p>\n\n\n\n<p>The clearance between the guide wheel and the rail is generally 2\u20134 mm and can be adjusted according to the supplied drawings.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2272\" height=\"1952\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Horizontal-guide-wheel-device.png\" alt=\"\" class=\"wp-image-16070\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Horizontal-guide-wheel-device.png 2272w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Horizontal-guide-wheel-device-1536x1320.png 1536w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/Horizontal-guide-wheel-device-2048x1760.png 2048w\" sizes=\"(max-width: 2272px) 100vw, 2272px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"17-crane-buffer\">17. Crane Buffer<\/h2>\n\n\n\n<p>The buffer reduces the impact when the crane or trolley reaches the end stop, or when cranes on the same span collide with each other, providing safety protection for the crane or trolley.<\/p>\n\n\n\n<p>Crane-travel and trolley-travel buffers can use spring buffers or hydraulic buffers according to contract requirements, and other buffer types can also be selected as required by contract. The impact offset angle of the installed buffer is less than 1\u00b0.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"18-operators-cabin\">18. Operator&#8217;s Cabin<\/h2>\n\n\n\n<p>The operator&#8217;s cabin is the workplace where the operator controls the crane. It is equipped with electrical control equipment, lighting, various instruments and meters, and a fire extinguisher.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2496\" height=\"1664\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/cabin.png\" alt=\"\" class=\"wp-image-16073\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/cabin.png 2496w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/cabin-1536x1024.png 1536w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/09\/cabin-2048x1365.png 2048w\" sizes=\"(max-width: 2496px) 100vw, 2496px\" \/><\/figure>\n\n\n\n<p>Ladle overhead cranes are usually equipped with an enclosed, air-cooled operator&#8217;s cabin.<\/p>\n\n\n\n<p>The enclosed cabin uses an all-round visibility structure with a bottom window at the front. The window and door use aluminum-alloy frames with tempered safety glass. The cabin is fitted with a soft seat adjustable up\/down and forward\/backward, so the operator can observe the operating state of each mechanism at any time and ensure safe operation. The cabin floor is laid with insulating rubber carpet, the interior uses concealed wiring, and the connections between inside and outside pass through a terminal box for convenient maintenance.<\/p>\n\n\n\n<p>The enclosed air-cooled cabin is equipped with air conditioning, and the cabin uses an insulating sandwich structure.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"19-electrical-room\">19. Electrical Room<\/h2>\n\n\n\n<p>For a wide-girder bridge structure, the electrical room is generally arranged inside one or both of the main girders. Sealed doors are installed at both ends of the electrical room, with a lock and handle on each door. A passage no less than 500 mm is generally left inside the electrical room, and the walkway surface is laid with insulating rubber carpet.<\/p>\n\n\n\n<p>When the ambient temperature is too high to meet the electrical equipment&#8217;s requirements, an air cooler is required, and the cool air is delivered into the electrical room through air ducts. The inner walls of the electrical room are fitted with an insulating sandwich layer filled with insulating material to reduce the heat influence from outside.<\/p>\n\n\n\n<p>The electrical room is also provided with lighting fixtures and a portable fire extinguisher.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"20-electrical-house-configured-per-contract-or-design\">20. Electrical House (Configured per Contract or Design)<\/h2>\n\n\n\n<p>For a narrow-girder structure, the electrical equipment is generally arranged on the bridge walkway. When the environmental conditions cannot meet the electrical equipment&#8217;s requirements, the crane needs an electrical house, which is set on the bridge walkway. When the ambient temperature cannot meet the electrical equipment&#8217;s requirements, an air cooler is set outside the electrical house, and the cool air is delivered into it through air ducts. The electrical house is fitted with an insulating sandwich layer filled with insulating material to ensure the electrical equipment works normally. The electrical house door is fitted with a lock and handle, and a passage no less than 500 mm is generally left inside.<\/p>\n\n\n\n<p>The electrical house is also provided with lighting fixtures and a portable fire extinguisher.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"21-air-conditioning-system\">21. Air Conditioning System<\/h2>\n\n\n\n<p>The air-cooled operator&#8217;s cabin generally uses a heating-and-cooling air conditioner, and the cabin temperature is controlled at about 20\u201330 \u00b0C.<\/p>\n\n\n\n<p>The air-cooled electrical room and electrical house use crane-specific air coolers with air-delivery ducts, and the indoor temperature is generally controlled at no more than 35\u201340 \u00b0C or per contract requirements. A condensate vaporization device, automatic dehumidification device, and other equipment can also be configured as required by contract.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"22-fire-protection-equipment\">22. Fire Protection Equipment<\/h2>\n\n\n\n<p>Portable fire extinguishers are provided in the operator&#8217;s cabin and in the electrical room (or electrical house). Each fire extinguisher has a storage bracket and is fixed in a suitable position inside the room.<\/p>\n\n\n\n<p>Through this brief analysis and explanation of metallurgical ladle overhead cranes, this article has introduced the form and function of each major component of a ladle overhead crane, helping readers build a basic understanding for standardized design and avoid unnecessary mistakes and problems in future design work.<\/p>","protected":false},"excerpt":{"rendered":"The ladle overhead crane is one of the key pieces of equipment in the steelmaking process. A ladle crane is made up of four major parts: the bridge, the trolley (including the lifting spreader), the crane traveling mechanism, and the electrical equipment. Although a ladle overhead crane may look complex, it is actually assembled in [&hellip;]","protected":false},"featured_media":16088,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[197],"posts_tag":[104],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hndfcrane.com\/tr\/wp-json\/wp\/v2\/xmxposts\/16016"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/tr\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/tr\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":20,"href":"https:\/\/www.hndfcrane.com\/tr\/wp-json\/wp\/v2\/xmxposts\/16016\/revisions"}],"predecessor-version":[{"id":16091,"href":"https:\/\/www.hndfcrane.com\/tr\/wp-json\/wp\/v2\/xmxposts\/16016\/revisions\/16091"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/tr\/wp-json\/wp\/v2\/media\/16088"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/tr\/wp-json\/wp\/v2\/media?parent=16016"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/tr\/wp-json\/wp\/v2\/posts_category?post=16016"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/tr\/wp-json\/wp\/v2\/posts_tag?post=16016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}