SU511530A1 - Stand for testing elements of railcar truck frames - Google Patents

Description

one

The invention relates to testing machines, in particular the design of the stand for field tests of the structures of the crew part of the rolling stock in static and

four

dynamic modes.

A stand for testing railcar carriage frame elements is known that contains horizontal and vertical loading hydraulic jacks with stops interacting with the object under test, hydraulic pulsators and hydraulic accumulators and a control panel installed on the base of the power frame.

However, this stand does not provide for testing elements of the frames of carriages of rolling stock with simultaneous creation of bending deformations in the vertical and horizontal planes and torsion deformations in them.

The purpose of the invention is to create in the test object at the same time bending deformations in the horizontal and vertical planes, as well as deformations steeper) 1i.

For this purpose, the stand is equipped with U-shaped clamping brackets, consisting of guides with cheeks moving along them,

connected at points displaced relative to the neutral axis of the test object to the rods of horizontal jacks, and the power frame is made in the form of a rectangle, to the two inner opposite sides of which there are fixed wedges that are in contact with the sides facing the test object with moving wedges , and on the third inner side there is a movable clamping bar.

FIG. 1 shows the proposed stand, a general B1; in fig. 2 is the same, view along arrow A in FIG. one; in fig. 3 - the same, П-obraena clip.

The proposed stand consists of an i3 base 1, on which the force frame 2 is placed with the mechanism 3 for moving the movable wedges 4 and the clamping cross member 5, which is moved by the mechanism 6 for moving the crosshead 5.

Claims (1)

In addition, on base 1, stops 7 with hydraulic jacks 8 horizontal loading fixed on calipers 9 are installed, hydraulic jacks 10 vertical loading locate 1e on calipers 11. Control panels 12 with hydraulic actuator 13, hydropulsators 14 connected between couplings 15, and hydroaccumulator 16. Hydropulsators 14 and hydroaccumulator 16 are connected to hydraulic jacks 8 and 10 by folding pipe 17. To change the loading skeleton of the test sample are switching plugs 18. And pytuemy member 19 is fixed in its central part in the rack 2 by the movable and stationary 2O 4. wedges and pressure beam 5. The fixed wedges 20 are attached to the two inner opposite sides of the force frame 2 and are in contact with the sliding wedges 4. The free ends of the test element 19 are gripped by T-shaped clamping brackets 21 made in the form of a guide 22 with two movable along it, the seals are 23. The rods 24 of the hydrojacks of 8 horizontal loading are in contact with the pins 23 at points mixed relatively neutral from the test element 19. The stand works as follows. In preparing the stand for work, the test element 19 is installed in the power frame 2, located on the base 1 of the Stand, and in its middle Part is fixed in it with movable 4 and fixed 20 wedges and a traverse wedge 5. Moving the movable wedges 4 along the fixed wedges 2О and the movement of the clamping track of the version 5 is carried out, respectively, by the mechanism 3 of moving the movable wedges 4 and the mechanism 6 of moving the crosshead 5. U-shaped clamping brackets 21 are mounted on the free ends of the test element 19, after which their cheeks 23 are pressed against the element 19 by moving along the guide 22. Then, hydraulic jacks 1O of vertical loading are applied to the ends of the element 19O on the respective calipers 11 and stops 7 with hydraulic jacks 8 horizontal and loading on corresponding calipers 9. At the same time, the cheeks 24 of the hydraulic jacks 8 abut against the necks 23 of the U-shaped clamp bracket 21 at a predetermined distance from the neutral axis of the test element 19. Further to the hydraulic jacks 8 and 10 horizontal and vertical loading with the aid of the collapsible pipeline 17 connects the hydraulic pulsators 14 and the hydroaccumulator 16. Switching the cork valves 18 and connecting the couplings 15 sets up the required loading circuit and the loading mode of the test element 19. The loading mode and the phase are characterized by specified forces and phase shifts between them. After all the listed operations have been performed, the stand is put into operation, in the static and dynamic loading mode, switching on from the control panel 12 of the hydraulic actuator 13. Dynamic loading can occur at frequencies of 5; 7.5; 10 and 16. Hertz. The bench allows simultaneous generation of bending deformations in the vertical and horizontal planes and torsion deformation in the test element 19. The invention The stand for testing the elements of the frames of carriages of railway rolling stock containing horizontal and horizontal loading jacks mounted on the base frame, horizontal and vertical loading jacks with stops interacting with the object under test, hydropulsators, hydraulic accumulators and a control panel different from creating simultaneously bending deformations in the horizontal and vertical planes as well as torsion deformations in the object under test, it is provided with different clamping brackets consisting of guides with Sheki moving along them, attached at points displaced relative to the neutral axis of the object under test to the horizontal load hydraulic jacks, and the force frame in the form of a rectangle, to the two inner, opposite sides of the koiTOporo fixed wedges in contact with the sides facing to: to the test element with movable wedges, and on the third inner side, a movable clamp bar is installed.