SU981842A1

SU981842A1 - Vehicle lowered gravitation simulator actuator

Info

Publication number: SU981842A1
Application number: SU782600547A
Authority: SU
Inventors: Дмитрий Анатольевич Романов; Николай Иванович Егоров; Владимир Евгеньевич Чугунов
Original assignee: Предприятие П/Я А-7544
Priority date: 1978-04-10
Filing date: 1978-04-10
Publication date: 1982-12-15

Description

Изобретенщв относитс .к испытательным стендам в частности к стеидам дл наземных испытаний транспортных средств, предназначенных дл работы в услови х поннженной гравитации.The invention relates to test benches, in particular, to steids for ground testing of vehicles intended to operate in conditions of reduced gravity.

Известен исполнительный механизм имитатора пониженной гравитации, содержащий шарнирный двухзвенник и упругие элементы, соединенные с одним звеном двухзвенника непосредственно, а с другим посредством кинематической передачи, выполненной в виде шар- нйрно-рычс1жного параллелограмма 13.Known actuator simulator reduced gravity, containing a hinged two-link and elastic elements connected with one link of the two-link, directly, and with the other through a kinematic transmission, made in the form of ball-parallelogram 13.

Недостатком этого исполнительного механизма вл етс непосредственное соединение упругого элемента со звеном и наличие шарнирно-рычажного параллелограмма, что ограничивает зону слежени за перемещением испытуемого объекта и снижает точность моделировани .The disadvantage of this actuator is the direct connection of the elastic element with the link and the presence of a hinged parallelogram, which limits the tracking area for the movement of the test object and reduces the accuracy of the simulation.

Наиболее близким к предпагаем(м«у по технической сгущности и достигаемому результату вл етс исполнительный механизм имитатора пониженной гравитации транспортных средств, содержащий шарнирно установленный на .поворотном корпусе шарнирный двухзвенник , coёдинeнныJft свободным концом первого эвена с испытуенс м транспортным средством, а каждое из звеньев кинематически св зано с соответствукщимс кривошипами, соединенными с поворотным корпусам посредством упругих элементов С 2}.The closest to the suppose (in terms of technical density and the achieved result is the actuator of the reduced gravity simulator of vehicles, containing a hinge two-hinge hinged on the swiveling housing, and the joint end of the first end with the test vehicle is kinematically associated with the corresponding cranks connected to the rotary bodies by means of elastic elements C 2}.

Дл обеспечени возможности применени такого устройства при испытании объектов с различными весовыми характеристиками обычно используютс сменные винтовые цилиндрические пружины или сменные пакеты йружин, что оказываетс целесообразным лишь при весах объектов, до 100 кГ, так как дошьнейшее увеличение нагрузки на To ensure the possibility of using such a device when testing objects with different weight characteristics, replaceable helical springs or replaceable spring packages are usually used, which only makes sense when weighing objects up to 100 kg, since the

15 устройство приводит к значительному увеличению габаритов и веса пружинных узлов, а следовательно к услож .нению конструкции силового элемента. Таким образом, причина ограничени 15, the device leads to a significant increase in the size and weight of the spring assemblies, and therefore to complication of the design of the power element. Thus, the reason for limiting

20 универсализации устройства по весоЬым характеристикам исследуемых объек- тов заключаетс в недостаточной энергоемкости винтовых цилиндрических пружин.20 universalization of the device according to the weight characteristics of the objects under study consists in insufficient energy intensity of the helical coil springs.

2525

Цель азобретени - раоиирение диапазона регшизуемьиг: весовых нагрузок путем пбдьаУени энергоемкости упругих элементов.. .The goal of the acquisition is to improve the range of regi-shingig: weight loads by means of energy intensity of elastic elements ...

Поставленна цель, достигаетс тем, The goal is achieved by

Claims

30 that in the Jft mechanism of a simulated low gravity simulator, containing a hinged two-articulated hinged on the swiveling case, connected by the free ends of the first link to the test vehicle, each of the kinematically links is connected to the corresponding curved connectors and connectors. elastic elements, each elastic element is made in the form of a torsion, the ends of which are rigidly attached to the hooks of the fork, which is installed in the horizontal bearing of the specified body, and n is pivotally mounted portion of the torsion bar in the additional plug mounted on said fork, and is provided with a drum attached thereto nonproliferation extensible flexible element for connecting a crank. The jia drawing shows a kinematic diagram of the device in an axonometric view. The executing mechanism comprises a rotary platform 1 mounted on a mobile mechanism (not shown} on the hinge 2, allowing the rotary platform to rotate relative to the vertical axis. Racks 3-6 that end with Hinges are rigidly fixed on the rotary platform 7-10, the axes of which are horizontal and located in the same vertical plane, with the hinges 8 and 9. Cranks 11 and 12 are installed in the hinges 8 and 9, the length of which is equal to the distance between the axes of the axes 7, 7, and 9, 10, respectively, with fingers 13 and 14, entering into the opening of flexible non-expandable elements (e.g., bands 15 and 16; other ends attached to the drums 17 and 18 installed in hinges pax 19 and 20 in forks 21 and 22. Torsions 23 and 24 are fixed by one ends in forks 21 and 22, and in the middle we are in drums 17 and 18, and so that the upper position of cranks 11 and 12 in the plane of hinges 7-10 corresponds to the undeformed state of torsions . Crank 11 is rigidly connected to block 25, e. crank 12 — with link 26. A two-link hinge consists of two links 26.27 and a hinge 28 connecting them. Coaxially to the hinge 28-on link 27, block 29 is rigidly fixed, which is connected to block 25 by a flexible inextensible element 30. Another link of link 27 is connected to the center of mass of the object under study by means of a hinge suspension 31. Overcoming the object of irregularities during movement 1 and 2 the masses in a plane in which links 26 and -54 lead to OTHofe5we "4 cn" s-the creeping of these links, and, consequently, to turning the cranks 11 and 12, causing the reels (winding) of the tapes 15 and 16 to wind up (17 and 18) which in turn leads to a consistent torsion twist new 2..24. Provided that the ribbons are of sufficient width, the drums, and therefore the forks on which they are mounted, occupy positions determined by the directions of the belts, i.e. The axes of rotation of the drums will always be perpendicular to the axes of the ribbons moving from them. As a result, the forces from tightening the torsions 2.3, 24 and shoulders on the cranks 11 and 12 are always in such a correspondence that the moments M and arising on the cranks and transmitted further to the link 26 directly, and to the link 27 through block 25, flexible The clamping element 30 and the block 29, in the suspension 31, create a vertical, independent of the position of the center of mass of the object. Within the tracking zone, a force that partially or fully compensates for the power of the tensile weight P of the object under study. When the center of mass of the object leaves the plane of the links 25 and 27, the platform 1 rotates about the vertical axis in the hinge

2. The adjustment of the device to different weight characteristics of the objects under study is carried out by setting torsions of various rigidity. The application of the invention allows to simplify the actuating mechanism of simulators of reduced gravity and to expand the range of weight loads about two times. Claims An actuator mechanism of a reduced gravity simulator of vehicles containing a hinged two-hinge hinged on a rotary body, connected by the free end of the first event to the test vehicle, and each of the links is kinematically connected with the corresponding cranks connected to the swivel one by means of an elastic element. -. cops, different. The fact that, in order to expand the range of real load loads by increasing the energy intensity of elastic elements, the elastic element is made in the form of a torsion, the ends of which are rigidly attached to the ends of the plug that is installed in the horizontal bearing of the specified body, 3-the middle part of the torsion