SU403745A1 - DAMPFER OF THE HANGING DRIVE OF THE CONVERTER - Google Patents

Description

The invention relates to metallurgy and can be used in the drive mechanisms of converters for smoothing dynamic loads during starting and braking of the drive.

Known damper hinged drive converter, consisting of a hydraulic cylinder with two pistons, the piston of smaller diameter located on the rod of the hydraulic cylinder, and the piston of larger diameter mounted with the possibility of stirring along the axis of the rod. The hydraulic cylinder cavity enclosed between the two pistons is connected to a low pressure accumulator, and the other two cavities are connected to a high pressure accumulator.

However, the known hinged converter drive damper has a low damping reliability and is difficult to operate.

The purpose of the invention is to improve the damping characteristic and increase the reliability of the damper.

This is achieved by the fact that the damper is additionally provided with a coaxially arranged first hydraulic cylinder, the pistons of which are connected by a freely passing rod through them, and between the pistons is placed an elastic element that interacts through the pistons with the rod, and the cavities of each of the hydraulic cylinders are interconnected through each other in parallel installed inverse valves and throttles; as a resilient element a package of cup springs is applied; pistons of hydraulic cylinders are made with two false brushes of equal diameter; the lines connecting a pair of cavities in each cylinder are equipped with. safety valves.

The drawing shows onislava damper.

In the housing 1 of the damper, hinged to the foundation, two hydraulic cylinders 2 and 3 are coaxially arranged with pistons 4 and 5 mounted on the rod 6 with the possibility of movement along the axis of the rod. The end of the rod 6 pivotally fastened to the drive housing

7 converter. Pistons 4 and 5, each of which is made with two false rods of equal diameter, are supported on the one hand, on nut 8 and shoulder 9, on the other, through disks 10 and 11, on the ends of the package

disc springs 12. The disc springs pack 12 is installed with pre-compression under load, the value of which is equal to the force arising on the damper rod at the nominal torque

drive converter.

The cavities 13-16 of the hydraulic cylinders 2 and 3 are connected in pairs through parallel-installed check valves 17 and throttles 18, and the check valves are installed in such a way that the liquid can flow

from one cavity to another with the movement of the pistons 4 and 5 in the direction of the package of Belleville springs 12.

The cavities 13-16 of the hydraulic cylinders are also connected through non-return valves 19 and 20 to the low-pressure accumulator 21 to compensate for possible fluid leaks from the cavities of the hydraulic cylinders.

The cavities 13-16 of the hydraulic cylinders 2 and 3 and the connecting lines connecting them are seized from pressure overloads by safety valves 22 and 23.

When the load on the rod 6 exceeds the magnitude of the preload compression spring | H 12 in any direction, the rod 6 of the damper moves, compressing the package of springs 12. For example, when the rod 6 of the damper moves down, the force from the rod 6 is transmitted through the nut 8, the piston 4 and a disk 10 on a package of springs 12, compressing it. The fluid from the cavity 14 through the check valve 17 freely flows into the cavity 13. Energy accumulates in the package of springs 12. A smooth return of the drive housing 7 of the converter to its original position comes from the force of the compressed package of springs 12, which through the disk 10, the piston 4, the nut 8 and the rod 6 acts on the drive housing. At the same time, the pressure of the fluid in the cavity 13 rises, perceiving the entire load from the force of the spring pack 12, and through the throttle 18 the fluid is forced out into the cavity 14.

During throttling, the energy accumulated by the springs is quenched. The speed of return of the drive housing 7 to its original position depends on the setting of the throttles 18. The piston 5 of the lower hydraulic cylinder 3 is fixed.

When the damper rod 6 moves upwards, the mold 5, which interacts with the brush 6 through the shoulder 9, and with the spring package through the disk 11, works in a similar way. In this case, the high pressure cavity is the cavity.

16, and the cavity pressure cavity is cavity 15. During operation of the piston 5, the piston 4 is stationary.

External leaks from hydraulic cylinders 2 and 3 are replenished from the low pressure hydraulic accumulator 21 via reverse clans 19 and 20.

If the volume of fluid displaced from one cavity and absorbed by another is different, then the excess fluid is discharged through safety valves 22 or 23, and the missing volume of fluid is sucked from the hydraulic accumulator 21 through check valves 19 and 20.

Subject invention

Claims (4)

1. A hinged converter drive damper containing a hydraulic cylinder, characterized in that, in order to improve the performance damping and increasing reliability in operation, the demuffer is additionally equipped with a coaxially arranged first hydraulic cylinder, the cavities of which are connected by a free-flow brush, and between the pistons there is an elastic element that interacts through the pistons with the rod, each cavity. hydraulic cylinders are interconnected in pairs through parallel clans installed in parallel and throttles. 2. A damper according to Claim 1, characterized in that a pa; Ket disc springs are used as an elastic element. 3. A minner according to claim 1, characterized in that the pistons of the hydraulic cylinders are made with two false rods of equal diameter. 4. The minner according to claim 1, characterized in that, in order to avoid excessive pressure increase due to the inaccuracy of making the diameters of the false brushes, the main lines connecting the pair of cavities in each hydraulic cylinder are provided with safety clamps. /////, U // 7