SU1673903A1 - Vibration stand - Google Patents

Description

The invention relates to vibration testing equipment. The purpose of the invention is to simplify the design and improve the amplitude-frequency response. The vibration table contains a base, a platform 2 for fixing the tested product,

at least one hydraulic exciter with double-acting cylinder 6 and two pistons 9 and 10, acting on platform 2 through thrust and pusher 11 with spherical hinges at the ends formed by spherical fingers 13, 16 and 17 and thrust bearings 14, 15, 18 and 19 The finger 16 is fixed on the platform 2, the thrust is made in the form of a clip 12 and a thrust bearing

15. The yoke 12 is located inside the piston 9, and the pusher 11 is inside the yoke 12. The pressure in the working cavities 7 and 8 and in the cylinder 6 ensures constant compression in all hinge connections and, as a result, backlash-free operation of the pathogen. 4 il.

A-A

S 718/7 / O - 2

and uh

ιν εοόεζφι

6

20

Fig 2

1673903

The invention relates to testing equipment, namely, stands for vibration tests.

The purpose of the invention is to simplify the design and improve the amplitude-frequency response.

Figure 1 shows the vibrostand in a two-component implementation; figure 2 - sections Α-A, BB and bb In figure 1, respectively.

The vibration table contains a base 1, a platform 2 for installing the tested product (one or several hydraulic exciters 3 oscillations connected to it are not shown). The platform 2 is mounted for movement on hydrostatic bearings 4 along guides 5.

Each driver 3 oscillations includes a double-acting power cylinder 6 with working cavities 7 and 8 and first and second pistons 9 and 10, which are connected to platform 2, respectively, through a thrust and pusher 11 with spherical hinges at the ends.

Thrust includes a sleeve 12 covering the plunger 11, having a spherical pin 13 at the end facing the piston 9, a thrust bearing 14 for which is made in the piston 9, and a spherical thrust bearing 15 placed at the other end for the spherical finger 16 fixed on the platform 2.

The ferrule 12 with a finger 13 is located inside the piston 9. The pusher 11 has a spherical finger 17 at one end, the counter bearing 18 for which is made in the second piston 10, and at the second end facing the platform 2, the foot 19 for the finger 16, In the piston 9, there is a tapered bore 20 in which the holder 12 and the pusher 11 are placed and which allows the angular oscillations of the latter relative to the piston 9.

The vibration table works as follows.

When hydraulic pressure is applied to the cavity 7, the piston 10 acts through the pusher 11 and the spherical pin 16 to the platform 2, which moves on the bearings 4 along the guides 5. At the same time, the thrust with the piston 9, which displaces the liquid from the cavity 8, moves in the same direction back pressure account in the last carried

podzhir the herdshne ') ι to the 13 finger and podaynn'e kak 19 to the finger 16, which provides without, a gasket mode of operation of the pathogen 3 kolrG-achy when the pressure supply to the cavity 7 is stopped and fed to the cavity

eight.

In the latter case, due to the back pressure, when the liquid is expelled from the cavity 7, the piston 10 is pressed against the spherical finger 17 and the pusher 11 towards the finger

sixteen.

In the case of the vibrostand multicomponent thrust and the pusher 11 make angular oscillations relative to the pistons 9 and 10 within the bore 20.

Simplifying the design and improving the amplitude-frequency response of the shaker is achieved by reducing the power chain (fewer links), through which force is transmitted from the pathogen 3 oscillations to platform 2 and the back-up mode of the pathogen is ensured by compressing all the spherical connections.

Claims (1)

Claim A vibrostand containing a platform for installing the tested product, one or several hydraulic exciters, including each double-acting power cylinder with two working cavities and the first and second pistons connected to the platform, respectively, with a spherical hinge and pusher at the ends, each with spherical The hinges are formed by a spherical finger and a thrust bearing, the thrust includes a clip with a spherical finger at its end facing the piston, and a spherical hem located at the other end The IR for a spherical finger fixed on the platform, and the pusher is placed inside the cage and there is a second thrust bearing for the last finger on the platform side, characterized in that, in order to simplify the design and improve the amplitude-frequency characteristic, the cage with a spherical finger is placed inside the first the piston, the thrust bearing for the spherical cage pin is made in the first piston, the spherical pin of the hinge connecting the pusher with the second piston is located at the end of the pusher, and the return thrust bearing is made in the second EDSS. 1673903 Schi g.1 FIG. 3 1673903 Bb