ZTA、ZTB、ZTC型阻尼彈簧隔振器

ZTA，ZTB，ZTC damp spring vibration absorber

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ZTA型阻尼彈簧隔振器是以螺旋彈簧為主體，配以阻尼材料及上下殼體、橡膠摩擦墊片等組成，本係列共有30種荷載規格，選擇麵廣、荷載範圍大，其最佳額定荷載從1OON至48000N，使用載荷從67N至64000N，固有頻率均在1.5至4.9Hz範圍內，適應性強，對積極隔振、消極隔振、衝擊隔振效果顯著，是降低噪音、減少振動危害、保護環境的理想隔振器。產品阻尼比為0.065，具有固有頻率低又有較大阻尼比，結構緊湊合理，使設計更為優化，對固體傳聲的隔離效果明顯，是一種多功能的隔振元件，能基本滿足各類隔振工程的需要。

ZTA型阻尼彈簧隔振器根據安裝方式不同可分為三種：1、ZTA型為上下不固定，可任意移動調節重心；2、ZTB型為上部固定形式；3、ZTC型為上下均可固定，以適合各種安裝需要。

本隔振器的選用方法是：

1、確定隔振體係總質量W(N)，包括設備、基座的質量。

總質量W=Q(靜)+1.5R(動)

Q=Q1(設備質量)+Q2(基座質量)

在一般振動要求不嚴又難於取得設備擾力時，可以近似地采用設備質量01乘以動荷係數P來代替設備質量和擾力。

G=Q1+1．5R=Q1·P

因此，總質量W=G+Q2=Q1·P+Q2

P動荷係數，可以根據設備質量Q1大小及擾動頻率f　大小來確定。

Q1大f小時p值可取小些，Q1小f大時p值可取大些，一般情況下取p≈1．1～1．4。

2、確定幹擾頻率f=n/60(Hz)。(n一設備每分鍾轉速)。

3、試定隔振器數量S。

4、計算每隻隔振器荷載P=W/S(N)。

5、由隔振器特性圖查出適宜的隔振器型號和相應的壓縮量F及豎向固有頻率f。

6、當需要計算徑向剛度時，可查特性表。

7、隔振設計必須滿足：

(1)有一定的隔振效率，T≥80％即頻率比f/f0≥2．5。

(2)隔振體係的振動量(振幅或速度、加速度)小於許可值，一般情況下振動速度Vmax<10mm/s。

但不同設備有不同的評定值，請參閱有關設備相關評定標準。

The main body of ZTA damp spring vibration absorber is spiral spring，auxiliary part includes damp materials，with a cover and a base，rubber frictional gasket．This series contain 30 types of load，for a wide range of load to choose．Optimal load ranges from 1 00N to 48000N，working load ranges from 67N to 64000N，intrinsic frequency ranges from 1．5 Hz to 4．9Hz．They have strong adaptability，which are notably effective in positively vibration absorb，passively vibration absorb and impact vibration absorb，and are the ideal vibration absorber to reducing noises and vibration and protecting environment．Damp ratio of the product is 0．066，with a low intrinsic frequency and low damp ratio，SO they possess excellent ability of insulating to Solid transaudient with the compact structure and superior design．As the multi—function vibration absorb component，they can meet basically requirements of different vibration ab sorb engineering．

There are 3 types ofZTA damp spring vibration absorber according to way of installation：1 ZTA without fixing，can remove and adjust barycenter freely，2ZTBbefixedOnthetop section，3ZTCbe fixed either on the top or base according to installation need．

Selecting method：

1，Ascertain the total weight W(N)ofthe vibration absorb system including the weight of the equipment and base．

total weight w=Q(static)+1．5R(dynamic)

Q=Q1(weight ofthe equipment)+Q2(weight of the base)

The result ofweight ofequipment Q1 multiply coefficient ofthe dynamic load P can take the place of equipment weight and disturb force，when the require of vibration is not SO strict and the disturb force is not access．

G=Q1+1．5R=Q1*P

So the total weight w=G+Q2=Q 1。P+Q2

Dynamic load P can be ascertained through equipment weight Q 1 and disturb frequency f

When Q 1 is greater，fis lesser，value ofthe P can belesser．viseversa．NormalvalueofPis 1．1～1．4．

2，Ascertain disturb frequency，f=n／60(Hz)．(nrpm ofequipment．)

3，Try to ascertain the amount ofthe vibration abSO— rberS．

4，Calculate the load ofeach vibration absorber P， P=W／S fN)．

5，Check the suitable vibration absorber type and cOrresponding compressing volume，vertical intrinsic frequency，with the characteristic figure of vibration absorber．

6，Check the figure ofvibration absorbe~when calculating radial rigidity is needed．

7，Design ofthe vibration absorber must meet the following require，

(1)0wn certain vibration absorb efficiency．T≥80％，this means frequency ratio f／fO≥2．5．

(2)Vibration quantum(swing orvelocity,acceleration、ofvibrat— ion absorb system less than the permissive value，under the normal condition．vibration velocity Vmax<1 0mm/s．Different equipment has different access value，please refer to access standard ofcorre． spondlng equipment．

ZTA、ZTB、ZTC型隔振器外形尺寸圖：

Figuration dimension figures ofZTA，ZTB，ZTC as following：

技術性能表(三種產品除固定方式不同外，其餘特性均相同)

Technological Performance(the three type products have same performance，except for installation way)

ZTA-1050至ZTA-4800型大載荷阻尼彈簧隔振器適用於柴油機隔振檢測平台、大型隔振消聲房和房屋基礎隔振等場合。

ZAT-1050 to ZTA-4800 heavy load damping spring vibration isolator,are suitable on the occasion of vibration isolating detecting platform for diesel engines，large vibration isolating and noise reducing house，and fundamental vibration isolating for building as well．

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