SD型橡膠隔振墊

SD Rubber shock isolating cushion

SD型橡膠隔振墊由丁腈橡膠制成。具有耐油、耐腐蝕、耐老化等性能。它是以減切受力為主的隔振墊,具有固有頻率低、結構簡單、使用方便等特點，廣泛應用于各類振動機械設備的隔振降噪,如機床、風機、水泵、空氣壓縮機制冷機、柴油機等機械的積極隔振和各類精密儀表儀器,光學儀器的消極隔振，隔振效果明顯。

SD型橡膠隔振墊有三E種橡膠硬度: 40、60、 80。基本塊尺寸為85X85 MM。可根據機械設備的不同栽荷要求任意裁切組合,選用方便隔振墊還可以多層串連迭合使用,其載荷仍為單層載荷量,但固有的頻率可以降低隔振效果更佳，多層隔振墊之間使用4MM厚鋼板隔開,鋼板尺寸每邊比隔振墊大10MM,并用膠粘劑將隔振墊肋部" 點粘”在鋼板上。其中40、80、厚為20MM, 60厚為22MM。

工作溫度-20°C~ + 60°C ;阻尼比D=0.08;固有頻率范圍5~ 18HZ。SD型橡膠隔振墊于1 983年8月21日由北京市科學技術委員會組織的“工業企業噪音控制設計標準”會議上通過科研成果鑒定,榮獲科研成果二等獎，鑒定意見認為:“SD型橡 膠隔振墊以減切受力為主，設計合理,固有頻率較低該項研究成果達到國際先進水平”。

為簡化設計選用步驟,可按全國建筑標準設計圖集88SS657《水泵隔振及其安裝》選用。

SD rubber vibration isolation cushion is made of acrylonitrile- butadiene rubber,with the features such as oil resistance ,corrosion resistance and aging resistance. The vibration isolation cushion is mainly under shearing load, with the features such as low natural frequency, simple structure and convenient use, widely applied in the active vibration isolation and noise reducing for various vibra-tion mechanical equipments such as machine tool, fan ,pump, air compressor, cooler,diesel engine，passive vibration isolation for various precise instrument, meter and optical instrument,its vibration isolation effect is very obvious.

SD rubber vibration isolation cushion has thr e-type rubber hardness: 40,60 and 80.its basic block size is 85x85mm, which may be freely cut and assembled according to different loads of mechanical equipments. The vibration isolation cushions may be multi-layer connected,while its load is still the load of simple layer but natural frequency will be lowed and the vibration isolation effect will be better .Multi- layer vibration isolation cushions are is olated by steel plate with 4mm thickness ,each side of steel plate is enlarged by 1 0mm compared with that of cushion.Stick the ribs of cushion on the steel plate with adhesion agent, among which,the thickness for type-40 and type-80 is 20mm,while 22mm for type-60.

Working temperature is-20~+ 60:damping ratio D=0. 08: natural frequency scope is 5~18HZ.

SD rubbe vibration isolation cushion was passed the scientific research achievement assessment at the conference of Specifications for the Design of Noise Control System in Industrial  Enterprises organized by Beijing Municipal Science& Technology Commission on August31,1983.it was honor-ed as the second prize with the assessment comment as follows；

SD rubber vibration isolation cushion is mainly under shearing load,withreasonable design and lower natural frequency.it has reached the international advanced level.

Please refer to the national construction standard design drawing sheet 88ss 657- Pump Vibration Isolation and Its Installation for reducing design and choosing steps.

SD型基本塊尺寸

型號代義

A-型號標識符

B-橡膠硬度標識符.6表示硬度60" (邵氏)

C-隔振墊疊加層數

D-每層基本塊數

技術條件

工作溫度: -15*C-70°C

阻尼比: 0.086

固有頻率: 4.7-17.2HZ

基本塊尺寸: 85X85X20(mm)

SD型橡膠隔振墊插入損失分貝(dB):

Decibel loss (dB) with SD Rubber shock isolating cushion inserted: