ZTA、ZTB、ZTC型阻尼弹簧隔振器

ZTA，ZTB，ZTC damp spring vibration absorber

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ZTA型阻尼弹簧隔振器是以螺旋弹簧为主体，配以阻尼材料及上下壳体、橡胶摩擦垫片等组成，本系列共有30种荷载规格，选择面广、荷载范围大，其最佳额定荷载从1OON至48000N，使用载荷从67N至64000N，固有频率均在1.5至4.9Hz范围内，适应性强，对积极隔振、消极隔振、冲击隔振效果显著，是降低噪音、减少振动危害、保护环境的理想隔振器。产品阻尼比为0.065，具有固有频率低又有较大阻尼比，结构紧凑合理，使设计更为优化，对固体传声的隔离效果明显，是一种多功能的隔振元件，能基本满足各类隔振工程的需要。

ZTA型阻尼弹簧隔振器根据安装方式不同可分为三种：1、ZTA型为上下不固定，可任意移动调节重心；2、ZTB型为上部固定形式；3、ZTC型为上下均可固定，以适合各种安装需要。

本隔振器的选用方法是：

1、确定隔振体系总质量W(N)，包括设备、基座的质量。

总质量W=Q(静)+1.5R(动)

Q=Q1(设备质量)+Q2(基座质量)

在一般振动要求不严又难于取得设备扰力时，可以近似地采用设备质量01乘以动荷系数P来代替设备质量和扰力。

G=Q1+1．5R=Q1·P

因此，总质量W=G+Q2=Q1·P+Q2

P动荷系数，可以根据设备质量Q1大小及扰动频率f　大小来确定。

Q1大f小时p值可取小些，Q1小f大时p值可取大些，一般情况下取p≈1．1～1．4。

2、确定干扰频率f=n/60(Hz)。(n一设备每分钟转速)。

3、试定隔振器数量S。

4、计算每只隔振器荷载P=W/S(N)。

5、由隔振器特性图查出适宜的隔振器型号和相应的压缩量F及竖向固有频率f。

6、当需要计算径向刚度时，可查特性表。

7、隔振设计必须满足：

(1)有一定的隔振效率，T≥80％即频率比f/f0≥2．5。

(2)隔振体系的振动量(振幅或速度、加速度)小于许可值，一般情况下振动速度Vmax<10mm/s。

但不同设备有不同的评定值，请参阅有关设备相关评定标准。

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型隔振器外形尺寸图：

Figuration dimension figures ofZTA，ZTB，ZTC as following：

技术性能表(三种产品除固定方式不同外，其余特性均相同)

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

型号 Type	外形尺寸mm Piguration Dimension mm						最佳荷载(N) Optical Load(N)	预压荷载(N) Designed Compression Load(N)	极限荷载(N) Margin Load(N)	竖向刚度 (N/mm) Vertical Rigidity (N/mm)	最佳荷载点水平刚度 (N/mm) Horizontal Rigidity at Optical Load (N/mm)
型号 Type	H	h	L1	L2	D1	D2	最佳荷载(N) Optical Load(N)	预压荷载(N) Designed Compression Load(N)	极限荷载(N) Margin Load(N)	竖向刚度 (N/mm) Vertical Rigidity (N/mm)	最佳荷载点水平刚度 (N/mm) Horizontal Rigidity at Optical Load (N/mm)
ZTA-10	72	6	115	150	80	10	100	67	133	7.6	5.5
ZTA-16	85	6	125	160	90	10	160	107	213	9	12
ZTA-25	100	6	140	180	100	10	250	167	333	11	16
ZTA-40	70	6	170	210	140	10	400	267	533	23	17
ZTA-42	115	6	150	190	110	16	420	280	560	14	19
ZTA-60	80	6	195	230	160	10	600	400	800	30	24
ZTA-65	115	6	150	190	110	16	650	433	867	22	30
ZTA-80	100	6	220	260	180	10	800	533	1067	34	26
ZTA-85	135	6	160	200	120	18	850	567	1133	32	40
ZTA-110	100	6	220	260	180	10	1100	733	1467	42	30
ZTA-115	135	6	160	200	120	18	1150	767	1533	44	54
ZTA-150	120	8	250	290	200	16	1500	1000	2000	58	45
ZTA-160	150	8	190	230	140	20	1600	1067	2133	46	60
ZTA-200	120	8	250	290	200	16	2000	1333	2667	86	38
ZTA-210	150	8	190	230	140	20	2100	1400	2800	60	76
ZTA-250	140	8	265	310	220	18	2500	1667	3333	98	50
ZTA-260	170	8	200	240	165	20	2600	1733	3467	55	65
ZTA-320	140	8	265	310	220	18	3200	2133	4267	128	70
ZTA-330	170	8	200	240	165	20	3300	2200	4400	76	83
ZTA-460	150	8	320	360	280	20	4600	3067	6133	137	80
ZTA-480	170	8	200	240	165	20	4800	3200	6400	140	81
ZTA-620	150	8	320	360	280	20	6200	4133	8267	185	126
ZTA-650	170	8	200	240	165	20	6500	4333	8667	200	130
ZTA-800	150	8	320	360	280	20	8000	5333	10667	236	145
ZTA-1050	170	8	360	400	320	20	10500	7000	14000	225	158
ZTA-1400	170	8	360	400	320	20	14000	9333	18667	308	200
ZTA-1900	170	8	360	400	320	20	19000	12667	25333	450	235
ZTA-2700	290	10	440	500	380	36	27000	18000	36000	595	200
ZTA-3600	290	10	440	500	380	36	36000	24000	48000	800	265
ZTA-4800	290	10	440	500	380	36	48000	32000	64000	1080	403

ZTA-1050至ZTA-4800型大载荷阻尼弹簧隔振器适用于柴油机隔振检测平台、大型隔振消声房和房屋基础隔振等场合。

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．