Spring Mounts Elliptic Leaf Type (Naval " X " Type)

Transcription

1 Spring Mounts Elliptic eaf Type (Naval " X " Type) Tis type of vibration an sock isolator was esigne specifically for sipboar or mobile applications. Tey are particularly suitable to protect elicate sipboar equipment from sock ue to unerwater explosions or suen stoppage of veicles for veicle-mounte equipment. All materials use are impervious to corrosion an will operate efficiently uner a wie range of temperature, making te units well-suite for naval or aircraft applications. Teir basic esign employs two or more ig tensile stainless steel "U" forme leaves, situate at eac en, forming an elliptical sape wen joine togeter in te center portion wit face plates. Te spaces between te "U" forme leaves are fille wit a specially evelope polymer or stainless steel mes. Nonmetallic collars backe by stainless steel wasers are supplie for loa attacment, wile proviing noise reuction. Inc size or metric size bolts may be use for fastening of te equipment to te base or founation. ow transmitte sock accelerations are obtaine by combining large permitte static eflection in every irection wit a ig energy loss witin te mount. Te ig amping efficiency is obtaine by te polymer wic as a very low static stiffness. Te loa-bearing caracteristics are etermine by te metal construction of te mountings. Tese mounts may be use in tension as well as compression. Te "X" Mount is one of tat rare bree tat gives bot vibration isolation an sock protection. Its low frequency ensures effective vibration isolation, except were te resonant frequency of te surrouning structure may be sympatetic wit te mount's natural frequency. Similarly, care must be taken uring transportation of equipment supporte by "X" Mounts. Te main isavantage of te mount is tat transmissibility at resonance is ig. In most applications tis is not critical as te "X" Mounts are place in areas tat o not coincie wit its resonant frequency. Tis special applications mount may be of particular interest not only for its improve vibration performance at low temperature, but also its lower natural frequency at room temperatures. Tis may avoi te nee of trying to reuce te natural frequency by means of aing a rubber waser in tanem, as tis proceure also increases te transmissibility at resonance of te system. Sock protection of te new esign as te ae benefit of urability uner repeate socks at low temperatures. INSTAATION OF "X" MOUNTS ue to te sopisticate nature of te "X" Mounts, it is essential tat tey be correctly loae. Incorrect loaing will mean inaequate sock protection (tis is true even in unerloae situations). Ba Practice ue to te sape an size of te "X" Mount, tere is a strong tenency to use te space create as storage. Neeless to say, any suc placement can rener te sock protection useless. Preferre Systems Mounts supporting te system unerneat only, wit te center of gravity in te lower tir of te unit, is preferre. en tis is impossible, a fully suspene meto soul be use. Top steaies can be use were it is ifficult to coose mounts to support te weigt using a fully suspene configuration. Te practice of combining units on one raft is often carrie out to ensure tat a suitable loaing is obtaine. Tis practice is especially important for operator-controlle equipment; te seat can be mounte on te raft as well. Orientation ere possible, te orizontal roll axis soul be fore an aft, to minimize equipment movement ue to sip roll, but any orientation is acceptable for sock protection. It is avisable to place mounts on any one piece of equipment in te same irection. TYPICA APPICATIONS INCUE: eavy Macine Tools Air Compressors Engine Suspension Macine Mounting Macine Craft Installations aboratory Equipment Electric Motors Factory Test Gear Seat Suspension in Aircraft an Veicles Raar Communications Equipment Electronic Control Equipment Equipment Mountings in Tanks an oter Military Veicles Bomb an oter ifting Gear Refrigeration Compressors Mobile Veicles Fuel Tanks Blowers an Fans Pumps 5-

2 Spring Mounts Elliptic eaf Type COMPONENTS MATERIA: eaves 304 Stainless Steel* asers Nylon an Stainless Steel amping Compoun Polymer NATO APPROVE NAVA "X" MOUNTS EIGT UNER NOMINA OA VIBRATION MOES: VERTICA: ORIZONTA 1: UNOAE EIGT ORIZONTA : MOUNTING ARARE ETAI Sown as mounte (bolts an wasers are not supplie). VY VY VY VY VY VY VY VY (11.3) 50 (.7) (45.4) (68) 50 (113.5) (181.4) 700 (31) 0 (453.6) 0 40 (9 18) (18 34) 75 (34 54) -00 (54-91) (91 136) (136 50) (50 386) 850 ( ) engt 8 (03) 8.5 (16) 11.7 (97) it 4 (1.6) eigt Unloae wit asers (114) (133) (190) eigt e wit asers 4.17 (6) 4.85 (13) 4.88 (14) 7.5 (184) iameter asers.5 (63.5) TEMPERATURE RANGE: +50 F to +86 F + C to +30 C Bolt ole.354 (9).51 (13).87 (1) 1/ (1) 3/4 (0) eigt (kg) 1.5 (0.68) 1.75 (0.8).5 (1.0).5 (1.13).75 () 13 (5.9) 1 (6.57) 16 (7.5) VY VY VY VY VY VY VY VY Vertical / 75 (13.39) (6.79) 50 (44.65) (71.43) 650 (116.08) 300 (4.74) 3000 (535.75) 4800 (857.) Static Stiffness orizontal 1 / 40 (7.14) 80 (14.9) 135 (4.11) 0 (39.9) 350 (6.5) 60 (1.7) 760 (135.7) 1 (196.44) orizontal / (17.88) 00 (35.7) 330 (58.93) 50 (9.86) 850 (151.8) 3070 (548.5) 700 (48.17) 0 (714.33) *NOTE: Available in natural finis or painte black (at a iger price on special orer). 5-3 Natural Frequencies - z Vertical orizontal 1 orizontal S E C T I O N 5

3 Spring Mounts Elliptic eaf Type MATERIA: eaves 304 Stainless Steel asers Nylon an Stainless Steel amping Compoun Polymer M8 BOT EIGT UNER NOMINA OA NATO APPROVE NAVA "X" MOUNTS IGTEIGT New.99 (76) (5).33 (8.5) 5.6 (133.5).79 (0) UNOAE EIGT NOTE: imensions in ( ) are mm. VIBRATION MOES: VERTICA: FEATURES: Te 6 kg Mount is esigne to isolate ligtweigt equipment (i.e. computers, printers, electronics panels etc.) from sock an vibration an as similar properties to te present range of 'X' mounts wit some reuction in te available eflection uner sock conitions. ORIZONTA 1: ORIZONTA : TEMPERATURE RANGE: +50 F to +86 F + C to +30 C VY (6) (4.8 7.) eigt Excluing Bolt (kg).31 (0.14) Vertical / 33 (5.91) Static Stiffness orizontal 1 / 43 (7.68) orizontal / 18 (3.5) Natural Frequencies - z Vertical orizontal 1 orizontal

4 Spring Mounts Elliptic eaf Type MATERIA: eaves 304 Stainless Steel asers Nylon an Stainless Steel amping Compoun Stainless Steel Mes NATO APPROVE NAVA "XM" MOUNTS FOR EXTREME ENVIRONMENTA CONITIONS New SPRING ASSY. BUS ASER VY M005 VY M0050 VY M0 VY15-570M0 VY15-571M050 VY15-849M0 VY15-848M0700 VY15-847M0 5 (11.3) 50 (.7) (45.4) (68) 50 (113.5) (181.4) 700 (31) 0 (453.6) 0 40 (9 18) (18 34) 75 (34 54) -00 (54-91) (91 136) (136 50) (50 386) 850 ( ) engt 8 (03) 8.5 (16) 11.7 (97) it 4 (1.6) eigt Unloae wit asers (114) (133) (190) eigt e wit asers 4.17 (6) 4.85 (13) 4.88 (14) 7.5 (184) iameter asers.5 (63.5) TEMPERATURE RANGE: -38 F to +75 F - C to + C Bolt ole.354 (9).51 (13).87 (1) 1/ (1) 3/4 (0) eigt (kg) 1.5 (0.68) 1.75 (0.8).5 (1.0).5 (1.13).75 () 13 (5.9) 1 (6.57) 16 (7.5) 5-5

5 Spring Mounts Elliptic eaf Type COMPONENTS TRANSMISSIBIITY / TEMPERATURE / RESONANCE Real stiffness "Q" = Complex stiffness "Q" / TEMPERATURE 0 "Q" Factor Q B f e c Temperature C -40 b a Impresse frequency z NATURA FREQUENCY / TEMPERATURE 30 a b c e f Temp C ( F) f n z Q 41.6 (6.9) 9.9 (85.8) 19.7 (6). (50.4) 0.5 (3.9) (3.0) f n =Natural Frequency Temperature C 5-6 S E C T I O N 5