液壓升降機齒輪故障的判斷方法

1、升降機齒輪表面疲憊
升降機齒輪齒面點蝕，點蝕多發(fā)生在節(jié)線四周。當(dāng)接觸應(yīng)力和輪回次數(shù)超過一定限度時，兩齒面會產(chǎn)生微小的裂紋，接觸應(yīng)力是隨時間而變化的脈動輪回應(yīng)力，隨輪回次數(shù)的增加，裂紋逐步擴展，就會使裂紋之間的金屬微粒剝落下來形成齒面疲憊點蝕。
Lift the gear tooth surface pitting, pitting occurred around the pitch line. When the contact stress exceeds a certain limit and the number of rounds, the two tooth surface microcracks generated contact stress change with time and the stress pulse of the cycle, with the cycle number increased, the gradual expansion of the crack, the crack will cause the metal particles between the flaking off the formation of tooth surface fatigue pitting.
2、監(jiān)督及齒面磨損
初期劃傷會發(fā)展成嚴(yán)峻劃痕或咬接起皺，在整個齒頂形成無數(shù)溝槽或皺紋狀的痕跡，若不及時處理，這些劃痕會造成更嚴(yán)峻的后果。由于這些與滑動方向相同的劃痕會劃破油膜造成金屬接觸。其形成的原因可能是減速器輪齒軸線不平行，安裝不準(zhǔn)確，設(shè)計錯誤、潤滑油粘度太低、流量不足或溫度太高。另外灰塵、雜質(zhì)等污物進入齒面會加劇磨損。嚴(yán)峻時齒廓被破壞，使傳動不平穩(wěn)，有噪音，甚至輪齒折斷。
Early scratches will develop into severe scratches or snap wrinkle, numerous signs throughout the addendum shaped grooves or wrinkle formation, if not promptly treated, these scratches will cause more severe consequences. As these scratches with the slide in the same direction will cause the metal-contact film scratched. The reason may be formed not parallel to the axis of gear teeth, the installation is not accurate, design errors, oil viscosity is too low, the flow rate is low or temperature is too high. Also dust, dirt and other impurities into the tooth surface will increase wear. When severe tooth profile is damaged, so that the transmission is not smooth, noise, and even tooth broken.
3、齒輪塑性變形
施工升降機減速器輪齒表面金屬變形主要是由于負荷過重，尤其是沖擊性負荷，這種金屬變形就是所謂的塑性變形。較軟或韌性較高的金屬原料更易泛起塑性活動。
Metal construction hoist reducer tooth surface deformation is mainly due to overloading, especially impact load, the metal deformation is called plastic deformation. Softer or higher raw material more ductile metal thrown plasticity activities.
4、減速機輪齒斷裂
負荷過重所造成的斷裂表面較為粗拙，成粒狀。金屬疲憊所造成的斷裂通常是由細小的裂縫經(jīng)由長時間蔓延而成。斷口處非常光滑，通常都可以看到金屬疲憊的出發(fā)點。
Overloading caused the fracture surface is more rough, granulated. Metal fatigue fracture is often caused by long small cracks from spreading through the. Fracture is very smooth, usually you can see the starting point for metal fatigue.
　　

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