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鑲銅閘門的加工鑄造過程

日期:2019-01-14 16:34  人氣:36

鑄鐵鑲銅閘門次要由門框、門體、導軌、楔緊安裝、密封面等部件組成。 
1、次要構造 
(1)、門框由優質鑄鐵資料全體澆鑄而成,門框兩側自帶導槽,精加工之後作門體升降的導軌。門框立體經龍門刨及立車精加工并辨别加工一道槽,以便鑲入青銅密封面。 
(2)、 門體爲全體鑄造的方形平闆,并在迎水面自帶“#”字形的增強筋,增強筋的數量視閘門規格大小而定,普通間距爲250~350mm之間。門體立體精加工并帶有鑲銅條的槽,以便鑲入青銅密封面,門體兩側精加工與門框側槽配合,構成上下滑軌。門體上端設有吊耳,門體與吊耳的兩接觸面精加工之後用螺栓固定。吊耳的受力點接近門體中心線,吊耳的銷軸孔用镗床加工。爲增加門體上下運轉時的摩擦力,導軌和門框銜接的接觸部位精加工,用螺栓聯接,并設有定位銷避免錯位。 
(3)、門體、門框按*任務水頭設計,其抗拉、抗壓、抗剪強度的平安系數爲5,傳動絲杆的導向支撐間距與絲杆半徑之比(柔度)不大于300。 
(4)、門體、門框在厚度上留出12mm的腐蝕裕度,門體與門框導向槽間隙小于1.6mm。 
(5)、 導軌用鑄鐵制造,導軌面加工成與門框一樣的槽,并在立體上鑲入青銅,增加門體上下運轉時的摩擦力。導軌和門框銜接的接觸部位精加工,用螺栓聯接,并設有定位銷避免錯位。 
(6)、楔緊安裝:爲到達閘門的止水效果,閘門兩側設置楔塊。楔塊用錫青銅制成,用螺栓辨别與門體和門框上的楔座固定,楔座銑生長孔,便于楔塊的調整。當閘門的某一處止水效果不好時可部分調整楔塊,當門體未關到位時或已到位而楔塊尚未楔緊時,需調整全部楔塊。 
(7)、密封面:閘門的密封由側向與底部、頂部四面組成,周圍密封采用門框圓形銅合金密封條嚴密貼合門闆的構造方式,應用門體封閉時與之接觸到達密封效果,在構造設計上保證全體密封良好。密封條采用銅合金經精細加工,密封條便于裝置和改換。門闆和門框的密封面采用軋制或擠壓的銅合金條制成并經精細加工結實地裝置在經加工的門框及門闆的槽中(密封座辨别鑲在經機加工的閘框和閘闆上,用與密封座相反資料制造的沉頭螺釘緊固,螺釘頭部與密封座任務面一同精加工,其外表粗糙度不大于3.2μm,以保證在門框與門闆的運用時期堅持原位、不變形、不松動。門框和門闆上經加工的凹槽在裝置密封條之前塗一層防水粘接劑,以保證水密性。密封任務外表無劃痕、裂紋和氣孔等缺陷。閘門設置有可以調理的楔緊安裝和強迫密封安裝,保證閘門封閉時,閘闆與閘框的密封面嚴密接觸,閘框密封座與閘闆密封座間隙小于0.1mm,閘闆與閘框導向槽間隙小于1.16mm。密封座采用銅合金精細加工。 
(8)、 絲杆由圓鋼制成梯形螺紋,其精度到達17e級規範,螺紋長度比門體行程高度加長1200mm,閥杆按*任務開閉力設計,其抗拉、抗壓、抗剪強度的平安系數爲不小于15,閘門處于封閉地位時,螺紋超出啟閉機螺母50mm,絲杆總長度超越15000mm時,需作分段加工,其接頭采用圓鋼加工成内圓孔,并用圓鋼鉸制螺栓将絲杆和接頭固定。接頭用固定工裝加工,可與相反規格的絲杆互換配合。絲杆總長度超越14000mm時,需增設軸導架,軸導架由鑄鐵襯套管裝置在鑄鐵托架上組成,鑄鐵托架固定在池壁上,導管與托架都可在兩個方向停止調理,絲杆下部焊有圓鋼銷套,用銷軸與門體相連。

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Cast iron brass gate is mainly composed of door frame, door body, guide rail, wedge installation, sealing surface and other components. 1. Secondary structure (1). The door frame is made of high quality cast iron materials. There are guide grooves on both sides of the door frame. After finishing, the door body lifting guide is made. The door frame is finished by gantry planer and vertical lathe, and a groove is identified for inserting bronze sealing surface. (2) The gate body is a square plate cast by the whole body, and has a The three-dimensional finishing of the door body is equipped with slots with bronze bars for inserting into the bronze sealing surface. The finishing of both sides of the door body is matched with the slots of the door frame to form the upper and lower slides. The upper end of the door body is provided with a lifting lug. After finishing the contact surface between the door body and the lifting lug, it is fixed with bolts. The stress point of the lifting lug is close to the center line of the door body, and the pin hole of the lifting lug is machined by boring machine. In order to increase the friction between the upper and lower running of the door body, the contact parts between the guide rail and the door frame are finely machined, bolted and positioning pins are provided to avoid misalignment. (3) The door body and frame are designed according to * task head. The safety factor of the tensile, compressive and shear strength is 5. The ratio of the guide support spacing to the radius of the screw rod (flexibility) is less than 200. (4) The corrosion margin of the door body and the door frame is 2 mm in thickness, and the gap between the door body and the guide groove of the door frame is less than 1.6 mm. (5) The guide rail is made of cast iron. The surface of the guide rail is machined into the same groove as the door frame, and bronze is inserted into the stereo to increase the friction of the door when it runs up and down. The contact parts between the guide rail and the door frame are finely machined, bolted and equipped with positioning pins to avoid misalignment. (6) Wedge installation: Wedge blocks are arranged on both sides of the gate to achieve the sealing effect of the gate. The wedge is made of tin bronze. It is fixed with the wedge seat on the door body and frame by bolts. The wedge seat milling the growth hole facilitates the adjustment of the wedge. When the water stop effect of a gate is not good, the wedges can be partly adjusted. When the gate body is not closed or in place and the wedges are not wedged, all the wedges need to be adjusted. (7) Sealing surface: The sealing of the gate is composed of four sides: side, bottom and top. The round copper alloy sealing strip of the door frame is used to close the door plate. When the door body is closed, it contacts with the gate body to achieve the sealing effect, and the whole sealing is guaranteed in the structural design. The sealing strip is made of copper alloy, which is easy to install and change. The sealing surface of door plate and door frame is made of rolled or extruded copper alloy strip and is finely machined and fixed in the groove of the processed door frame and door plate (the seal seat is distinguished from the machined gate frame and gate plate, and is tightened by countersunk head screw manufactured from the opposite data of the seal seat. The head of the screw is finely machined with the task surface of the seal seat, and its surface roughness is not more than 3.2 micrometers, so as to ensure the safety of the door. Ensure that the door frame and door plate in the use of the period adhere to the original position, no deformation, no loosening. The processed grooves on the door frame and the door panel are coated with a waterproof adhesive before the sealing strip is installed to ensure water tightness. There are no scratches, cracks and gas holes on the surface of the sealing task. The gate is equipped with adjustable wedge-tightening installation and forced sealing installation to ensure close contact between the gate plate and the sealing surface of the gate frame when the gate is closed. The gap between the seal seat of the gate frame and the sealing seat of the gate plate is less than 0.1 mm, and the gap between the gate plate and the guide groove of the gate frame is less than 1.6 mm. The sealing seat is made of copper alloy. (8) The screw rod is made of round steel trapezoidal threads with accuracy up to 7e level specification. The thread length is 200 mm longer than the height of the door body. The stem is designed according to the * task opening and closing force. The safety factor of its tensile, compressive and shearing strength is not less than 5. When the gate is in closed position, the thread exceeds 50 mm of the opening and closing machine nut, and when the total length of the screw rod exceeds 5000 mm, the joint should be processed in segments. Round steel is used to make inner round holes, and round steel hinged bolts are used to fix the screw rod and joint. Fixed tooling is used to process joints, which can be interchanged with screw rods of opposite specifications. When the total length of the screw exceeds 4000mm, additional shaft guide frame is needed. The shaft guide frame is composed of cast iron bushing device on the cast iron bracket. The cast iron bracket is fixed on the wall of the pool. The conduit and bracket can stop conditioning in two directions. The lower part of the screw rod is welded with round steel pin sleeve, which is connected with the door body by pin shaft.

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