WO2004041562A1 - Sistema de suspension aerostatica para equipos y vehiculos rodantes - Google Patents
Sistema de suspension aerostatica para equipos y vehiculos rodantes Download PDFInfo
- Publication number
- WO2004041562A1 WO2004041562A1 PCT/ES2003/000569 ES0300569W WO2004041562A1 WO 2004041562 A1 WO2004041562 A1 WO 2004041562A1 ES 0300569 W ES0300569 W ES 0300569W WO 2004041562 A1 WO2004041562 A1 WO 2004041562A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support
- vehicle
- lever
- equipment
- cylinder
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G3/00—Resilient suspensions for a single wheel
- B60G3/01—Resilient suspensions for a single wheel the wheel being mounted for sliding movement, e.g. in or on a vertical guide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/152—Pneumatic spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/126—Mounting of pneumatic springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/421—Pivoted lever mechanisms for mounting suspension elements, e.g. Watt linkage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/423—Rails, tubes, or the like, for guiding the movement of suspension elements
- B60G2204/4232—Sliding mounts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/37—Vehicles having steerable wheels mounted on a vertically moving column
Definitions
- the present invention relates to a suspension system consisting essentially of a set of elements that allow atmospheric pressure to support the weight of the equipment or vehicle in a neutral floating state, acting on each wheel individually.
- the suspension system is based on the use of springs, steel strips, or a combination thereof, whose oscillation is inhibited by the use of shock absorbers;
- the structure of these vehicles is designed to be able to withstand the forces generated by compression of the strips and / or springs, exceeding the weight of the vehicle. This forces the construction of heavy structures capable of withstanding the enormous tensions produced by sudden changes in vehicle elevation depending on the irregularities of the road.
- the damping system itself converts the energy associated with movements on the vertical axis of the wheels by finding unevenness, wells, potholes, etc., present on the road, in heat in the mounting bushings of the supports of the wheels and inside the shock absorbers where a liquid is pushed through a small hole.
- the shock absorber thus acts as a true transducer of mechanical energy in calories, also irreversibly.
- the system described here avoids all these energy losses by independentizing the mechanism of suspension of the body weight + motor + load of the translation mechanism (for example, electric motors mounted on the rear wheels).
- the wheels of the vehicle by design, can move vertically following the profile of the road, without loss of energy (except that necessary to overcome the inertia of the telescopic wheel-arm-lever-cylinder assembly of the present invention, which is a small percentage of the total mass of the vehicle) while the vehicle is suspended in an equilibrium position by the atmosphere itself. This is the reason why ground accidents are prevented from becoming destructive forces for the vehicle, its load or its kinetic energy. This characteristic is the fundamental reason for all the energy savings associated with the implementation of such a system.
- This system allows the construction of lighter vehicles, thus improving their load / weight ratio. 2. It allows the use of wheels with solid rubber cover without camera.
- this force is also present (in the form of vehicle weight / 4) but this also adds to the fact that it is necessary to lift the entire weight of the vehicle and compress the spring of the vehicle. suspension, which means a huge amount of energy that translates into huge pressures that must be absorbed by the ground. These pressures are proportional to the square of the vehicle speed, which means that when the speed is doubled, the pressure quadruples.
- the design of the system of the invention makes use of elements that today's industry can produce at low cost without inconvenience.
- the essential elements of this suspension system are, for each wheel, a cylinder with a polished inner surface and a piston filled with elastomeric fittings, with a synthetic rubber secondary seal.
- the rest of the elements used are commonly used in the industry.
- the present invention relates to a suspension system that consists essentially of a set of elements that allow atmospheric pressure to support the weight of an equipment or vehicle in a neutral floating state, acting on each wheel individually.
- the atmospheric pressure acts on a cylinder-piston assembly, so that the pressure opposes the separation of the inner faces with a force whose magnitude on each face is a function of the area of the plunger section.
- the force that is generated on the static element is supported by the structure.
- the force in the opposite direction that is generated on the mobile element, in this case the cylinder is transmitted by means of a lever system with adjustable support point to the end of a telescopic wheel support. The adjustment of the position of the support point allows adjusting the lift capacity of the system according to the load to be transported.
- the load of the equipment or vehicle will be supported aerostatically.
- the team or The vehicle can be moved vertically up or down just by overcoming its inertia, since its weight has been balanced by atmospheric pressure.
- the bearing force is a function of the section of the cylinders (in square centimeters) and the prevailing atmospheric pressure (approximately 1 kg / cm 2 )
- Figure 1 is an isometric view of the air suspension system in a four-wheel chassis.
- Figure 2 is a plan view of the system assembly on one of the wheels, indicating cuts by trace AA, trace BB and trace CC.
- Figure 3 is an elevation view of the system assembly for the same wheel, with AA, BB, and CC traces.
- Figure 4 illustrates the section cut
- Figure 5 shows the cut by the trace BB of Figure 2.
- Figure 6 shows the cut by the trace CC of Figure 2.
- Figure 7 shows the cut by trace AA of Figure 3.
- Figure 8 illustrates the section through the trace BB of Figure 3.
- Figure 9 shows the section through the trace CC of Figure 3.
- Figure 10 is an enlarged view of Figure 4 showing construction details of the piston-cylinder system that cannot be seen in Figure 4.
- the aerostatic suspension system of the invention which will be described below, is independent for each wheel, its principle and its mode of operation being identical, so that corresponding to a single wheel will be described.
- Figure 1 such as a four-wheel chassis, each provided with an aerostatic suspension system 1 of the invention.
- Figure 2 is a plan view of the system applied to a wheel. The arrangement of the cylinder-piston assembly 2, the lever 3 and the wheel support arm 4 can be seen which can be seen in the elevation view shown in Figure 3. In Figure 3 you can also see the telescopic assembly 5 of the wheel support Additionally, in figure 3 the set of the adjustable support point 6 is shown.
- Figure 4 which is a section along the trace AA of Figure 2, as well as in Figure 10, which is an enlarged view of Figure 4, the fundamental elements of the system can be seen, namely: a cylinder 7, which travels freely on a piston 8 mounted inside it provided with two elastomer fittings 9 and 10, which has a synthetic rubber sleeve 11 attached at one end to the outer face of the plunger and at the other to the upper end of the cylinder.
- a chamber 12 is thus created between the cylinder and the sleeve, in which a certain volume of lubricant is housed.
- Said lubricant must have as a fundamental characteristic, in addition to having high lubricating power, that of possessing low vapor tension at room temperature.
- the fitting 9 is an o'ring of circular section with a diameter of about 10 mm for a 200 mm diameter cylinder. It is mounted in a "duck tail" slot in which one of the adjustment faces is a sliding ring that is pushed by the threaded ring 13, which has a fixing screw that allows the ring 13 to be immobilized once adjusted o'ring compression. The surface finish of these faces should be 0.25-0.5 microns.
- the function of the threaded ring 13 is to slightly compress the o'ring to generate a contact surface between it and the cylinder.
- the o'ring contact band with the cylinder whose surface must have a surface finish of 0.25-0.5 microns, must have a width of 0.1-0.2 mm and must correspond to a crush that must not exceed 0.127 mm (according to manufacturers specification, for dynamic seals). Such configuration is sufficient to prevent the passage of lubricant and therefore air into the cylinder.
- the second fitting 10 has a U-section and its function is that of an oil scraper in order to retain the oil, thus ensuring the lubrication of the cylinder wall in the vacuum area, maintaining the level of lubricant in the chamber 14 of Figure 4, in order to guarantee the sliding with minimum friction of the fitting 9 of the same figure.
- Figure 10 shows the design of the lubricant chamber 14. As can be seen by observing the figures, as the cylinder moves over the plunger, the lubricant sleeve 11 fully ensures the system's tightness. Over time, small amounts of lubricant can cross the garrison barrier and it is necessary to dislodge them by counter-pressure by using the manual or electronically opening valve 15 of Figure 4. The lubricant returns to chamber 12.
- the critical element for the correct operation of the system is the compression adjustment of o'ring 9. It rubs against the inner side of the cylinder with a pressure, for a crushing recommended by the manufacturer of less than 0.127 mm, of the order of 10 kg / cm 2 If the width of the contact band between o'ring 9 and cylinder 7 is 0.2 mm, for a 20 cm diameter cylinder, the corresponding circumference length is 628.3 mm and the contact area, This value multiplied by 0.2 mm is equal to 125.66 mm 2 or 1.26 cm 2 .
- the piston 8 is attached to the support structure by means of a crosshead rod assembly 16 of Figure 4.
- the mission of this crosshead is to prevent small alignment errors from being translated into forces that can break the lubricant epilamen that protects the cylinder and the piston and dry friction occurs with the consequent deterioration of the surfaces.
- the force transmission mechanism generated by the atmospheric pressure applied to the lower face of the cylinder, can be seen from the rod 17 to the lever 3.
- the mechanism by design, ensures the invariability of the point of bearing / lever support with respect to the vertical axis.
- the same, represented in Figure 7, is composed of a metal box 18 that houses the bearing bearing 19.
- the frame 27 is mounted in which the bearing support 21 is housed.
- the point of support of the lever 3 on the bearing 21 is coaxial with the axis of rotation of the support bearings of the bearing support element 21 in order to ensure its invariability regardless of the angle of application of the force.
- This design allows the ratio of lever arms 3-A and 3-B not to be altered by varying the angle of support.
- the increase in the effective length thereof does not translate into a change in the relationship between both arms, since both are increased in equal proportion.
- Lever arms should be understood as the distances between the bearing support point 19 and that of the bearing 21 (3-A), and that between the bearing support point 21 and the axis of the joint 22 between the lever 3 and the wheel support arm 4 (3-B).
- the screw 26 of Figure 5 allows to rotate it, to vary the position of the support point in order to adapt the lifting force to the weight of the equipment or vehicle plus its load.
- the left end of the adjustment screw 26 is mounted with a bearing 28 suitable for absorbing radial and axial loads, since when the position of the lever is modified relative to the horizontal, a force is generated in this direction.
- the bearing is illustrated in detail 28 of Figure 4.
- the opposite end of the lever 3 is connected to the end of the arm that supports the wheel 4.
- Figure 6 which is a cut by the trace CC of Figure 2, the connection mechanism of these two elements can be seen.
- the telescopic wheel assembly has a vertical movement parallel to the axis of displacement of the cylinder 7. This is necessary to keep the ratio of lever arms constant as stated above.
- the position of the support point 21 can be adjusted manually or electronically. Once its position has been adjusted in order to achieve the balance between the lifting force and the weight of the vehicle plus its load, it will be in a position to get moving.
- the wheel support arms may be constructed with profiles of rectangular section, as illustrated in Figure 9, which is a cut by the CC trace of Figure 3.
- the wheel support arm 4 slides on two bearing assemblies 29 and 30 mounted in a rectangular chamber 5.
- the configuration and assembly of these bearings 29 is shown in section by the CC trace of figure 3.
- the support has in its lower section the axle tip where the wheel is mounted 31.
- the minimum lift capacity, Cs (min), shall be taken for a lever arm ratio of 1: 2 (that is, with the support point 1/3 of the total effective length of the lever measured from the linked end to the cylinder rod).
- the difference between Cs (max) and Cs (min) is in this case 628 , 32 kg.
- the chosen lever arm ratio values try to show how this system could be applied to conventional vehicles.
- the body is not subject to the tensions associated with conventional suspension systems, it is possible to design lighter bodies that will significantly improve the load / weight ratio of the vehicle.
- the ratio of lever arms can be reduced to, for example, 1: 2 for the maximum load (which would then be 628.32 kg and of 1: 4 for the minimum load (which would then be 314.16 kg.)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60314661T DE60314661T2 (de) | 2002-11-08 | 2003-11-07 | Aerostatisches federungssystem für rollgeräte und fahrzeuge |
US10/533,972 US7377501B2 (en) | 2002-11-08 | 2003-11-07 | Aerostatic suspension system for rolling equipment and vehicles |
BR0315849-7A BR0315849A (pt) | 2002-11-08 | 2003-11-07 | Sistema de suspensão aerostática para equipamentos e veìculos de rodagem |
AU2003278204A AU2003278204A1 (en) | 2002-11-08 | 2003-11-07 | Aerostatic suspension system for rolling equipment and vehicles |
EP03769520A EP1564038B1 (en) | 2002-11-08 | 2003-11-07 | Aerostatic suspension system for rolling equipment and vehicles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ARP020104284A AR037339A1 (es) | 2002-11-08 | 2002-11-08 | Sistema de suspension aerostatica para equipos y vehiculos rodantes |
ARARP020104284 | 2002-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004041562A1 true WO2004041562A1 (es) | 2004-05-21 |
Family
ID=38057380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2003/000569 WO2004041562A1 (es) | 2002-11-08 | 2003-11-07 | Sistema de suspension aerostatica para equipos y vehiculos rodantes |
Country Status (10)
Country | Link |
---|---|
US (1) | US7377501B2 (es) |
EP (1) | EP1564038B1 (es) |
CN (1) | CN1708419A (es) |
AR (1) | AR037339A1 (es) |
AT (1) | ATE365649T1 (es) |
AU (1) | AU2003278204A1 (es) |
BR (1) | BR0315849A (es) |
DE (1) | DE60314661T2 (es) |
ES (1) | ES2289333T3 (es) |
WO (1) | WO2004041562A1 (es) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB177942A (en) * | 1921-02-17 | 1922-04-13 | Antoine Mutti | Improvements in or relating to suspension devices for motor and other vehicles |
US3767181A (en) * | 1970-07-07 | 1973-10-23 | Burgt Gerrit V D | Spring system |
DE3734724A1 (de) * | 1986-10-24 | 1988-07-28 | Volkswagen Ag | Federungssystem fuer kraftfahrzeuge |
ES2166609T3 (es) * | 1997-06-30 | 2002-04-16 | Forsch Kraftfahrwesen Und Fahr | Sistema de suspension. |
DE10105300A1 (de) * | 2001-02-02 | 2002-08-08 | Continental Teves Ag & Co Ohg | Federung mit veränderlicher Tragkraft für ein Kraftfahrzeug |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1547243A (en) * | 1922-10-02 | 1925-07-28 | Frank L O Wadsworth | Supplemental spring suspension system |
FR1387858A (fr) * | 1963-10-03 | 1965-02-05 | Suspension réglable, plus particulièrement destinée aux véhicules automobiles | |
DE19932868B4 (de) * | 1999-07-14 | 2008-04-10 | Zf Sachs Ag | Federbein, wahlweise mit innerer Niveauregelung |
-
2002
- 2002-11-08 AR ARP020104284A patent/AR037339A1/es active IP Right Grant
-
2003
- 2003-11-07 WO PCT/ES2003/000569 patent/WO2004041562A1/es active IP Right Grant
- 2003-11-07 ES ES03769520T patent/ES2289333T3/es not_active Expired - Lifetime
- 2003-11-07 US US10/533,972 patent/US7377501B2/en not_active Expired - Fee Related
- 2003-11-07 EP EP03769520A patent/EP1564038B1/en not_active Expired - Lifetime
- 2003-11-07 DE DE60314661T patent/DE60314661T2/de not_active Expired - Lifetime
- 2003-11-07 AT AT03769520T patent/ATE365649T1/de not_active IP Right Cessation
- 2003-11-07 AU AU2003278204A patent/AU2003278204A1/en not_active Abandoned
- 2003-11-07 CN CN200380102555.7A patent/CN1708419A/zh active Pending
- 2003-11-07 BR BR0315849-7A patent/BR0315849A/pt not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB177942A (en) * | 1921-02-17 | 1922-04-13 | Antoine Mutti | Improvements in or relating to suspension devices for motor and other vehicles |
US3767181A (en) * | 1970-07-07 | 1973-10-23 | Burgt Gerrit V D | Spring system |
DE3734724A1 (de) * | 1986-10-24 | 1988-07-28 | Volkswagen Ag | Federungssystem fuer kraftfahrzeuge |
ES2166609T3 (es) * | 1997-06-30 | 2002-04-16 | Forsch Kraftfahrwesen Und Fahr | Sistema de suspension. |
DE10105300A1 (de) * | 2001-02-02 | 2002-08-08 | Continental Teves Ag & Co Ohg | Federung mit veränderlicher Tragkraft für ein Kraftfahrzeug |
Also Published As
Publication number | Publication date |
---|---|
DE60314661T2 (de) | 2008-02-28 |
BR0315849A (pt) | 2005-09-20 |
AU2003278204A1 (en) | 2004-06-07 |
CN1708419A (zh) | 2005-12-14 |
EP1564038B1 (en) | 2007-06-27 |
AR037339A1 (es) | 2004-11-03 |
US7377501B2 (en) | 2008-05-27 |
EP1564038A1 (en) | 2005-08-17 |
ES2289333T3 (es) | 2008-02-01 |
ATE365649T1 (de) | 2007-07-15 |
US20060022392A1 (en) | 2006-02-02 |
DE60314661D1 (de) | 2007-08-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2565242T3 (es) | Dispositivo y procedimiento de suspensión durante acción por resorte y/o acción de amortiguación para vehículo | |
US3970292A (en) | Oil and air suspension devices | |
US6036201A (en) | Adjustable vehicle suspension | |
EP0000287A1 (en) | A hydro-pneumatic spring suspension strut for motor vehicles | |
CA2881087C (en) | Cylinder shock assembly | |
AU2003203440B8 (en) | Suspension system | |
RU2685495C2 (ru) | Шасси воздушного судна | |
MX166180B (es) | Suspension tipo puntal con fuerza compensadora lateral | |
US20100237574A1 (en) | Vehicle suspension system | |
CN111348182B (zh) | 飞行器起落架和桨距修整器组件 | |
US3604725A (en) | Hydraulic suspension and steering system for vehicles | |
ES2289333T3 (es) | Sistema de suspension aerostatica para equipos y vehiculos rodantes. | |
ES2955702T3 (es) | Vehículo industrial y dispositivo de rodamiento de ruedas motrices para vehículos industriales | |
ES2275777T3 (es) | Muelle hidraulico0 actuante como muelle primario en vehiculos ferroviarios. | |
ES2526339T3 (es) | Aparato de manipulación de carga | |
ES2929307T3 (es) | Vehículo con un dispositivo de resorte con característica de resorte transversal predefinible | |
GB1601444A (en) | Spring devices suitable for vehicle axles | |
US20140067340A1 (en) | Method for designing cylinder device and cylinder device | |
CN205871664U (zh) | 轻量型整体焊接式空气悬挂系统 | |
RU2682943C1 (ru) | Гидропневматическая независимая подвеска колесного модуля транспортного средства | |
CN209870495U (zh) | 一种agv自调平差速转向机构 | |
KR980008635A (ko) | 자동차의 현가장치 | |
GB2096731A (en) | Gas spring suspension units for vehicles | |
JP4392221B2 (ja) | 懸架装置 | |
Sully | Motor Vehicle Mechanic's Textbook |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 20038A25557 Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 2006022392 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10533972 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 853/CHENP/2005 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003769520 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2003769520 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: PI0315849 Country of ref document: BR |
|
WWP | Wipo information: published in national office |
Ref document number: 10533972 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: JP |
|
WWG | Wipo information: grant in national office |
Ref document number: 2003769520 Country of ref document: EP |