SU1567907A2 - Braking device for impact testing bed - Google Patents

Abstract

This invention relates to a shock test technique. The purpose of the additional invention is to improve the accuracy of reproduction of a given shock pulse by eliminating the distortion of the pulse caused by the impact of the movable part of the stand on the rod. In the brake device containing a base 1, a crasher 2 mounted on it, a rigid holder 3, between the end of which and the base there is a gap 4 for squeezing the cracher material through it, and a piston protruding from the holder with a shock-receiving stem, a piston with a stem. made of parts that are installed with the possibility of limited axial movement relative to each other in the direction of the cracker. Parts of a piston with a rod can be cups 5-9 inserted one into the other with the formation of a gap 10 between their bottoms and adjoining along the side surfaces. Elimination of pulse distortion is provided by sequentially attaching the parts of the piston with the rod to the movable part of the shock stand. 1 hp f-ly, 2 ill.

Description

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The invention relates to a shock test technique, namely to brake devices of impact test benches, and is complementary to the main car no. 771490.

The purpose of the invention is to improve the accuracy of reproduction of a given shock pulse by eliminating the distortion of the pulse caused by the impact of the moving part of the stand on the rod.

Dinning glasses 5-9 to the movable part of the stand. As a result, by the time the cracker 2 begins to compress, rod 11 and glasses 5–9 occupy the position shown in FIG. 2. Further movement of the movable part of the stand and the mass of the piston with the rod attached to it leads to compression of the cracher 2, its plastic deformation and extrusion of the cracher material through the gap 4. In this case

Fig. 1 shows a braking mouth-10. A shock pulse is formed, the amplitude.

the initial position, the longitudinal position of which is determined by the size of the gap 10,

incision; in fig. 2 - the same, in the beginning, the duration - the amount of movement

nay moment of compression kreshera.mobile part of the stand.

The device contains a base 1, on the co-sequential attachment to the support there is a crash 2, fastened c15 of the movable part of the stand of the piston parts with the rod base 1 by means of a threaded connection, eliminating the occurrence of the peak and the enclosing crash 2 of the impulse during an impact movable part

stand with stock and boost thanks

There is a gap 4 between the end of which and o. iOB ,, there is a gap 4 for squeezing the material of the cracker 2 through it upon impact. On the cracher 2, a piston is installed with a rod projecting from the cage 2, which receives the impact of the moving part of the impact stand. The piston with the rod is made of composite parts, installed20

this is the reproduction accuracy of a given shock pulse.

Claims (2)

1. Brake device to a shock test bench according to ed. St. No. 771490, with the possibility of limited axially-characterized in that, in order to increase its displacement relative to each other in board kreshera. For example, the said parts are cups 5-9, inserted one into the other with the formation of a gap 10 between the bottoms and adjoining along side surfaces. The center of the parts are installed with the possibility of reproducing accuracy of a given shock pulse by eliminating distortion of the pulse caused by the impact of the movable part of the stand on the rod, the piston with the rod is made of composite This stem can also be made in the form of a rod 11. limited axial displacement relative to each other in the direction of the cracker. 2. The device according to claim 1, characterized in that the parts of the piston with the rod are cups that are inserted limited axial displacement relative to each other in the direction of the cracker. 2. The device according to claim 1, characterized in that the parts of the piston with the rod are cups that are inserted The brake device operates as follows. After the collision of the movable part of the 35 ° Dean in the other with the formation of a gap and with the first part in the course of the movement between the bottoms and the side adjoining, a successive suction surface occurs. Dinning glasses 5-9 to the movable part of the stand. As a result, by the time the cracker 2 begins to compress, rod 11 and glasses 5–9 occupy the position shown in FIG. 2. Further movement of the movable part of the stand and the mass of the piston with the rod attached to it leads to compression of the cracher 2, its plastic deformation and extrusion of the cracher material through the gap 4. In this case shock pulse is generated, amplitude this is the reproduction accuracy of a given shock pulse. Invention Formula 1. Brake device to a shock test bench according to ed. St. No. 771490, the parts installed with the possibility of the lights of reproducing a given shock pulse by eliminating the distortion of the pulse caused by the impact of the movable part of the stand on the rod, the piston with the rod is made of composite limited axial displacement relative to each other in the direction of the cracker. 2. The device according to claim 1, characterized in that the parts of the piston with the rod are cups that are inserted ° Dean in the other with the formation of a gap between the bottoms and mates on the lateral surfaces. Fig 2