RU1819726C - Hydropneumatic drive of swage hammer - Google Patents

Abstract

Usage: in forging and mechanical engineering, in particular in impact machines .. Summary of the invention: the actuator comprises a power cylinder mounted on a hammer frame, a receiver, drain and pressure valves connected by pipelines to the rod cavity of the cylinder and the pump station. An additional drain cavity is provided in the hammer frame. This cavity is connected to the drain valve and the drain capacity of the pumping station. The presence of a cavity provides additional cooling of the working fluid when draining, which favorably affects the operation of the drive as a whole. 2 ill.

Description

The invention relates to forging and mechanical engineering, in particular to impact machines.

The aim of the invention is to increase reliability and durability.

In FIG. 1 shows a hydropneumatic hammer drive, general view; in FIG. 2 - the same, frontal section.

The hydropneumatic drive of the stamping hammer comprises a working cylinder 1, in which a piston 2 with a rod 3 of a headstock 4, a receiver 5 covering a working cylinder 1 are placed. The working cylinder 1 and receiver 5 are mounted in a housing 6 mounted on a frame 7. The latter is mounted on racks 8 and 9 hammers. An additional drain cavity 10 is made in the frame 7, connected via a pipe 11 to a drain valve 12, and a pipe 13 to a drain tank of a pump station 14. The pump station 14 is connected by a pipe 15 to a pressure valve 16, in turn, the latter through a pipe 17 is connected with the rod 18 of the cavity of the working cylinder 1. The rod 18 of the cavity through the pipe 19 is connected to the drain valve 12.

Hydropneumatic drive stamping hammer operates as follows.

At the beginning of the cycle, the woman 4 is in the lower position, as is the piston 2. The cavities of the working cylinder 1 and receiver 5 are filled with gas under pressure Pr. To lift the piston 2, and therefore the woman 4, the liquid from the pumping station 14 is fed through the pipeline 15 to the pressure valve 16 and then through the open valve through the pipe 17 to the rod 18 of the cavity of the working cylinder 1. The pressure of the liquid fluid, acting on the piston 2, raises it together with the stem 3 and the woman 4 and any intermediate position (when the liquid supply is stopped), including to the extreme upper one, after which the liquid supply is stopped.

The gas located in the piston cavity of the working cylinder 1 and receiver 5 compresses (L

WITH

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h

Xi

ke

Os

s, the pressure rises slightly, since the volume of compressed gas (displaced from the working cylinder 1 into the receiver 5) is negligible. The hammer is prepared to strike.

A quick-acting drain valve 12 is opened, and liquid from the rod 18 of the cavity through the pipe 11 flows into the additional drain cavity 10 of the frame 7. and then from the cavity 10 through the pipes 13 flows into the drain tank of the pump station 14. The gas is in the piston cavity of the working cylinder 1 and receiver 5, accelerates the woman 4 and last performs a technological operation. To stop the headstock 4 at any acceleration site, it is necessary to stop the liquid draining through the drain valve 12, and to raise the headstock 4, it is necessary to supply fluid to the rod 18 cavity of the working cylinder 1. The cavity 10 of the frame 7 acts as an additional capacity of the pump station 14. in which Once the merging fluid is found, it cools. The heat of the liquid is given off through the lower and lateral surfaces of the cavity, as well as through a pipeline

5

0

5

I will give heat to the surfaces of the latter.

Claims (1)

Due to the additional cooling of the working fluid during discharge, the hydropneumatic drive operates under more favorable conditions, while seals and bearings are less subject to wear and tear, i.e. hydraulic drive is more reliable and more durable. SUMMARY OF THE INVENTION A hydropneumatic drive of a stamping hammer comprising a power cylinder mounted on a hammer frame, in which a piston with a rod connecting it to the headstock is located, a receiver covering the cylinder, a drain and pressure valve connected by pipelines to the working cylinder cavity and to a pump station installed in the area of the hammer, characterized in that, in order to increase reliability and durability, an additional drain cavity is made in the hammer frame connected to the drain valve pan and with the drain capacity of the pumping station, and the drain cylinder is made with a rod working cavity., tf-tf & V