The hydraulic system provides power for the operational devices of an engineering crane. Proper maintenance of the hydraulic system is crucial for enhancing the crane‘s operational reliability. Typically, hydraulic systems must undergo flushing before they are officially put into use. The purpose of this flushing process is to remove contaminants, metal debris, fibrous compounds, iron […]
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Load limiters and load moment limiters are collectively referred to as overload protection devices. Overloading is one of the primary causes of crane accidents. In mild cases, overloading can damage crane components, causing motor overload and structural deformation. In severe cases, it can result in broken beams, tower collapse, arm fractures, or even complete machine […]
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Factor 1: Unsafe Conditions of the Crane Itself One of the primary reasons for the falling of loads from crane hooks is the inherent unsafe conditions of the crane itself. These conditions can stem from various sources, including design flaws, manufacturing defects, improper installation, and inadequate maintenance. 1. Design Deficiencies Poorly designed cranes can present […]
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The structure of the short-stroke block brake is shown in Figure 1-17. When the electric motor is powered on, the electromagnet coil connected in parallel with the motor winding is also energized. This generates an attractive force in the stationary core (9), which pulls the moving core (8). Kontinwe, the push rod (7) is pushed […]
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1. Classification by Length Ball mills can be classified based on the ratio of their length to diameter. This classification affects their grinding efficiency, usage, and application in various industries. (1) Short Ball Mill A ball mill is considered short if its length-to-diameter ratio is less than 2. It is commonly referred to simply as […]
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Kòm yon kalite leve ak machin transpò, Gwo gwo kay won trepye yo se tendans rouye ak korozyon akòz divès kalite pwoblèm ki pako rezoud. Estrikti yo asye nan trepye gwo kay won gwo yo patikilyèman sansib a k ap wouye lè ekspoze a lè pou peryòd pwolonje san yo pa bon jan mezi pwoteksyon. Kowozyon sa a rive lè estrikti asye a reyaji chimikman ak […]
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1. Bon pwezante pandan leve operasyon pandan leve operasyon yo, kanpe dirèkteman anba boom nan, chaj la sispann, oswa nan chemen an leve ka trè danjere. Zòn nan triyangilè ki te fòme pa pouli a gid ak kab asye, zòn nan vwazinaj la nan kòd la vit, oswa direksyon fòs la nan yon zen dyagonalman rale yo tout […]
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Mwen. Règleman operasyon sekirite 1. Kalifikasyon operatè anvan opere machin lan woule plak, Operatè a dwe sibi bon fòmasyon pou konprann konplètman estrikti machin lan, pèfòmans, ak pwosedi opere. Se sèlman pèsonèl ki kalifye yo ta dwe pèmèt yo sèvi ak ekipman an yo anpeche aksidan ak asire sekirite. 2. Enspeksyon pre-operasyonèl anvan ou kòmanse machin lan, chèk sa yo […]
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1. Broken Working Steel Wire Rope When one end of the gondola’s working steel wire rope breaks, the suspended platform will tilt. Once it reaches a certain inclination, the safety lock will automatically engage, securing the platform to the safety wire rope. In such a situation, construction personnel inside the gondola should remain calm. It […]
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1. Premye antretyen pou nouvo machin apre premye a 250 èdtan nan operasyon, fè travay antretyen sa yo: Ranplase filtre gaz la ak plis filtre gaz. Enspekte clearance valv la nan motè a. 2. Antretyen chak jou fè chèk sa yo ak aktivite antretyen sou yon baz chak jou: Enspekte, pròpte, oswa ranplase filtre lè a. Netwaye la […]