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二手叉車應該如何檢修個各部件?

來源:http://nukkadh.com/ 日期:2019-05-15 發布人:admin

一、鏈條與滑輪的檢修

  I. Maintenance of Chains and Pulleys
  1.鏈片不得有裂紋和變形,需轉動靈敏(每20節鏈節伸長不超越規則值8mm,鏈條銷子的磨損不得超越原直徑5%),不得有嚴重彎曲、疲倦裂紋和銹蝕。如超越允許狀況時,應改換。
  1. No cracks and deformations are allowed in the chains, and the chains need to be rotated sensitively (the elongation of every 20 chains does not exceed the regular value of 8 mm, and the wear of the chain pins does not exceed the original diameter of 5%). No serious bending, fatigue cracks and rust are allowed. If the situation is beyond permission, it should be changed.
  2.若滑輪外表呈現不平均磨損,兩滑輪外徑差大于0.2mm,滑輪外表呈現臺階或壓痕,影響鏈條正常運轉時,應予以改換。
  2. If the pulley surface shows uneven wear and tear, the difference of outer diameter between the two pulleys is greater than 0.2 mm, and the pulley surface shows steps or indentations, which affect the normal operation of the chain, it should be replaced.
  二、主、側滾輪的檢修
  II. Maintenance of Main and Side Rollers
  主、側滾輪磨損痕跡應平均,其磨損限度沿方向,主滾輪為1.0mm,側滾輪為0.5mm,否則應改換。
  The wear marks of the main and side rollers should be averaged. The wear limit of the main rollers should be 1.0mm and the side rollers should be 0.5mm. Otherwise, they should be replaced.
  三、內、外門架的檢修
  III. Inspection and Repair of Inner and Outer Portal Frames
  1.門架變形的修理
  1. Repair of Gate Frame Deformation
  ①內、外門架請求平直,在全長內不直線度不得超越1mm,運用限度3mm;否則應修復。
  The inner and outer portal frames are required to be straight. The non-straightness in the whole length should not exceed 1 mm and the application limit should be 3 mm. Otherwise, they should be repaired.
  ②用磁力探傷、敲擊法檢查有無裂紋、變形或扭曲。如有,應修復。
  (2) Use magnetic flaw detection and percussion method to check whether there are cracks, deformations or distortions. If so, it should be repaired.
  ③當彎曲和扭曲變形較小時,允許用加靜載荷的冷校正法校正。當彎曲變形在全長范圍內超越1.5mm、橫向寬度差超越1.5mm或內門架頂板彎曲變形超越2.0mm時,應矯正。
  (3) When the bending and twisting deformations are small, the cold correction method with static load is allowed. When the bending deformation exceeds 1.5mm in the whole length range, 1.5mm in the transverse width difference or 2.0mm in the bending deformation of the roof of the inner portal frame, it should be corrected.
  ④內、外門架的部分變形或凸凹處,允許火焰校正。當彎曲、扭曲變形過大,用冷壓不易校正時,可加熱校正。加熱時應盡量減少加熱區域,將其溫度控制在700?800度,并遲緩冷卻,以免增大脆性。當整體變形、銹蝕嚴重、導軌里口尺寸超越磨損限度時,應報廢。
濟南叉車租賃
  (4) Partial deformations or concave and convex parts of the inner and outer portal frames shall be allowed to be corrected by flame. When the bending and twisting deformations are too large to be corrected by cold pressure, they can be corrected by heating. When heating, the heating area should be minimized, the temperature should be controlled at 700? 800 degrees, and the temperature should be slowly cooled to avoid increasing brittleness. When the overall deformation, serious rust, guide rail inner size beyond the wear limit, should be scrapped.
  ⑤內、外門架內側面導軌每邊磨損達2mm時,應改換導軌或修整后運用。
  _When wear and tear of inner and outer gantry guide rails reaches 2 mm on each side, the guide rails should be replaced or repaired and used.
  2.叉車門架裂紋的修理:在檢驗中如發現有裂紋,應停止修理。
  2. Crack repair of forklift door frame: If cracks are found in inspection, repair should be stopped.
  ①修理前應停止叉車門架的校正,堅持門架的固有直度。
  Before repairing, the correction of forklift gantry frame should be stopped and the inherent straightness of gantry frame should be adhered to.
  ②打磨裂痕處,直至顯露金屬光澤,然后認真檢查,肯定裂紋界線。在界線延伸10mm處鉆令5?的限止孔。
  (2) Grind the cracks until they show metallic luster, and then check carefully to confirm the crack boundary. Drill 5? Stop hole at 10 mm extension of the boundary.
  ③在裂口處用砂輪等修磨出焊道坡口。
  (3) grinding the groove with grinding wheel at the crack.
  ④停止填焊時,用直流反極性電弧焊。電弧應盡可能短,焊條直徑為4mm,電流約為210?240A。焊接時焊條應傾向運動方向20°?30°。填焊工作自鉆透孔開端直至裂紋另一端,并在背面也停止焊補,焊縫高度應不超越基體平面1?2mm。焊接時環境溫度應在0度以上。
  When stopping filling welding, DC reverse polarity arc welding is used. The arc should be as short as possible. The diameter of the electrode is 4 mm and the current is about 210?240A. When welding, the welding rod should be inclined to the moving direction of 20? 30. The filling and welding work shall be from the beginning of the drilling hole to the other end of the crack, and stop the filling on the back side. The height of the weld shall not exceed 1?2 mm of the base plane. The ambient temperature should be above 0 degrees during welding.

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