SU932334A1

SU932334A1 - Stand for testing structure for strength

Info

Publication number: SU932334A1
Application number: SU802988216A
Authority: SU
Inventors: Владимир Павлович Георгиевский; Иван Сергеевич Малютин; Ефим Ильич Прусс; Петр Борисович Пилипенко
Original assignee: Предприятие П/Я А-1923
Priority date: 1980-10-10
Filing date: 1980-10-10
Publication date: 1982-05-30

Description

(54) СТЕНД ДЛЯ ИСПЫТАНИЯ КОНСТРУКЦИЙ (54) STAND FOR CONSTRUCTION TEST

1one

Изобретение относитс к испытатетпгйой технике и может быть использовано дл испытани на прочность и устойчивость пространственных конструкций.The invention relates to a test technique and can be used to test the strength and stability of spatial structures.

Известен стенд дл испытани конструкций на прочность, содержащий силовую раму, приспособление дл креплени йс-, пытуемой конструкции, силовозбудитель и св занные, с ним через распределители нагружающие элементы с шарнирно соединенными с ними пластинами, устанавливаемыми на испытуемой конструкции. Распределители в известном стенде выполнены в виде системы траверс, передающих усилие через нагружающие элементы , выполненные в виде стержней, на испытуемую конструкцию 1 A stand for testing structures for strength is known, which contains a power frame, a device for fastening an IST, a test structure, an energizer and associated with it, through distributors, loading elements with hinged plates attached to them that are mounted on the tested structure. Distributors in the well-known stand are made in the form of a traverse system that transmits the force through the loading elements, made in the form of rods, to the tested structure 1

Недостаток стенда заключаетс в том, что в нем невозможно создать нагрузку, измен ющуюс по поверхности .конструкции по заданному закону.The disadvantage of the stand is that it is impossible to create a load that varies along the surface of the structure according to a given law.

Цель изобретени - расширение диапазонов нагружени . НА ПРОЧНОСТЬThe purpose of the invention is to expand the loading ranges. FOR STRENGTH

Указанна цель достигаетс тем, что стенд снабжен устанавливаемой с торцовой стороны испытуемой конструкции силовой плитой, св занной с силовозбудите- лем, |йазвдый нагружающий элемент выполнен в виде двух шарнирно соединенных стержней с регулируемой длиной, один из которых шарнирно св зан с силовой рамой, а распределители выполнены в виде гибких элементов, св занных одним концом со стержн ми в месте их шарнирного соединени , а другим - с силовой плитой по ее периферии.This goal is achieved by the fact that the test bench is equipped with a power plate installed on the front side of the test structure, connected with a force driver, the load element is made in the form of two pivotally connected rods with adjustable length, one of which is pivotally connected to the force frame, and The distributors are made in the form of flexible elements connected at one end with rods in the place of their articulation, and the other with a power plate along its periphery.

На чертеже изображен описьтаемый стенд, ббщнй вид.The drawing shows the described stand, the main view.

Claims

The stand contains a power frame 1, a device 2 for fastening the tested structure 3, an energizer 4, a power plate 5 installed on the front side of the structure 3 being tested and connected to the energizer A, loading elements, each made in the form of hinged joints of stubble 6 and .7 s adjustable length, one 39 of which (6) are pivotally connected to power frame 1, distributors made in the form of flexible elements 8 connected at one end to rods 6 and 7 in the place of their hinge connection, along its other end the periphery plates, 9, mounted on the test structure and pivotally connected to the rods 7 and to the device 2 through the bolts 10. The stand operates as follows. The tested structure 3 is fastened to the power frame with the help of the device 2. The length of the rods 6 and 7 is adjusted to provide the set angle between them. The force from the energizer 4 moves the plate 5 in the direction from the end of the used structure 3, thus affecting the flexible elements 8. When the elements 8 are moved, the rods 6 and 7 rotate around their swivel and the compressive force through the plates 9 is distributed over the surface of the test subject designs. The number of plates 9 along the test structure 3 is selected depending on the required accuracy of approaching the test load to the real one. The interchange between rods 6 and 7 can be realized when testing any law of change of test load. Loading the test structure 3 with a multitude of local loads created by rods b and 7 from one power driver 4 can withstand a given load law from the beginning tests to the destruction of the structure or the loss of its stability. 44 The proposed stand allows you to try various forms and p. The cons: claws under virtually any law of change in load and withstand this law in the process of loading, regardless of the degree of deformation of the local areas of the test structure. Formula for gaining a stand for testing structures for strength, containing a power frame, a device for fastening the tested structure, an energizer and associated with it through distributors, loading elements with hinged plates connected to them, which are installed in order to expand load ranges, it is provided with a power plate installed on the front side of the structure under test, which is connected to the force activator, each load element is made in the form of two articulated rod with adjustable length, one of which is pivotally coupled to the power frame, and the valves are in the form of flexible elements associated at one end with the rods at their point of articulation, and the other - with the force plate at its periphery. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 380977, cl. G01 M 5 / OO, 1971 (prototype).