SU974187A1

SU974187A1 - Loading device

Info

Publication number: SU974187A1
Application number: SU813289270A
Authority: SU
Inventors: Геннадий Васильевич Макушин; Виктор Александрович Шейченко
Priority date: 1981-05-20
Filing date: 1981-05-20
Publication date: 1982-11-15

Description

1one

Изобретение относитс к машиностроению, а именно к испытательной технике, и может быть использовано дл испытательных стенДов . работающих по схеме с замкнутым контуром .The invention relates to mechanical engineering, in particular to testing equipment, and can be used for test stands. working on a closed-loop circuit.

Известны стенды с контуром, в которых нагружение испьпываемых механизмов осуществл етс силами упругости торсионных валов 11.Stands with a contour are known in which the loading of the mechanisms used is carried out by the elastic forces of the torsion shafts 11.

Недостатком погружаемых устройств зтих стендов вл етс невозможность управлени нагрузкой, а также нестабильность иагрузки во времени. ,The disadvantage of the immersed devices of these stands is the impossibility of controlling the load, as well as the instability of loading in time. ,

Наиболее близким по технической сущности к изобретению вл етс нагружающее устройство дл испытательного стенда, работающего по схеме с замкнутым контуром, содержащее две ветви тросо-блочной системы, св занные между собой с помощью .соединительного блока, динамометр и электроуправл емьш нат жной механизм, соединенные между собой с помощью первой ветви тросо-блочной системы, замыкающие элементы в виде двух, соосных, выходных валов, кинематически св занных между собой с помощью второй ветви тросо-блочной системы, при зтом первый конец этой ветви закреп- лен на барабане, установленном на первом выходном валу, кажда ветвь тросо-блочной системы и соединительный блок имеет направл ющие ролики 2.The closest in technical essence to the invention is a loading device for a test bench operating according to a closed-loop scheme, containing two branches of a troso-block system, interconnected by means of a junction block, a dynamometer and an electro-controlled tensioning mechanism, connected between with the help of the first branch of the troso-block system, the closing elements in the form of two coaxial output shafts, kinematically connected to each other with the help of the second branch of the troso-block system, in this case the first Heff, this branch zakrep- flax on a drum mounted on the first output shaft, each branch of the rope-block system and the connecting block has two guide rollers.

Недостатком этого устройства вл ютс ограниченные функциональные возможности, поскольку кинематические отнощенй в нем A disadvantage of this device is its limited functionality, since the kinematic relations in it

10 завис т от передаточного отношени испытуемого механизма.10 depends on the gear ratio of the test mechanism.

Цель изобретени - расширение функциональнь1х возможностей путем устранени вли ни передаточного отношени испытуе15 мого механизма на кинематические св зи устройства.The purpose of the invention is to expand the functional possibilities by eliminating the influence of the gear ratio of the mechanism under test on the kinematic connections of the device.

Claims

This goal is achieved by the fact that in the loading device the first output shaft of the device is hollow, and through it the second output shaft is passed, which is equipped with a lever, the second branch of the troso-block system is closed through the drum and is rotatable with 39 output shafts with using the guides of the rollers mounted on the lever of the second output shaft, and the guide rollers of the junction box installed the thrust bearing inserted into the device. In addition, a program-regulating unit is introduced into the device, the input of which is connected to the dynamometer, and the output is the input of an electrically-controlled tensioning mechanism. The drawing shows a kinematic device diagram. The device contains the first 1 and second 2 branches of the troso-block system, the connecting unit 3, the dynamometer 4, the electrically controlled tensioning mechanism 5, the first and second 7 output shafts, the drum 8 on the first output shaft 6 and the lever 9 on the second output shaft 7, a thrust bearing 10 between the guide rollers of the junction block 3, the guide rollers 11 belonging to the first branch of the troso-block system 1 and the guide rollers 12 belonging to the second branch of the troso-block system 2. In addition, the device contains software electric control unit 13 This unit is connected to the dynamometer 4 and the electrically-controlled tensioning mechanism, which includes a spring 14. Both ends of the second branch of the Tros-Flying system 2 are fixed on the drum 8. The ends of the first branch of the Tros-block system 1 are fixed respectively on the dynamometer 4 and electrically controlled tensioning mechanism 5. The device operates as a part of the stand, while, for example, the output shaft of the test mechanism 15 is kinematically connected, for example, to the first output socket 6. Next, the second output shaft 7 is kinematically connected to the output shaft th test 1zaly mechanism 16. The input mechanism 15 and 16 is kinematically linked to the drive 17. The apparatus operates as follows. The software control unit 13 exerts a control signal on the electric control 1: tension mechanism 5, which by means of the first branch of the troso-block system 1, through the connecting unit 3, controls the tension in the second branch of the troso-block system 2, which rotates together with output shafts 6 and 7. When the tension in the second branch of the troso-block system is increased, the torque between the output shafts 6 and 7 increases. The dynamometer 4 produces a signal proportional to the moment between the output shafts. This moment acts in the closed circuit of the stand. When used in a stand with a closed kinematic contour, the device allows simplifying the process of accelerated life tests of various mechanisms, including having several output shafts located at different angles. Claim 1. A loading device for test benches operating in a closed loop scheme, comprising two branches of a troso-block system, interconnected by means of a junction block, a dynamometer and an electrically controlled tensioning mechanism, interconnected by means of the first branch of a troso -block system, the closing elements in the form of two coaxial output shafts, kinematically connected to each other using the second branch of the Tros-Christmas tree system, while the first end of this branch is fixed on the drum, At the first output shaft, each branch of the troso-block system and the connecting block have guide rollers, characterized in that, in order to extend the functionality by eliminating the influence of the gear ratio of the mechanism under test on the kinematic connections of the device, the first output shaft is hollow, and through it the second output shaft is passed, which is equipped with a lever, the second branch of the troso-block system is closed through the drum l is rotatable together with the output shafts by means of The mounting rollers are mounted on the lever of the second output shaft, and a thrust bearing inserted into the device is installed between the guide rollers of the junction block. 2. The device according to claim 1, characterized in that a software-regulating unit is inserted into it, to the input of which the output of the dynamometer is connected, and to the output - the input of the electrically controlled tensioning mechanism. Sources of information taken into account during the examination 1. USSR author's certificate No. 322668, cl. G 01 L 3/04, 1970.

2. USSR author's certificate number 697857, cl. G 01 M 13/02, 1978 (prototype).