SU444022A1 - Device for braking cargo - Google Patents

Description

one

The invention can be used in lines for cutting logs on lower forest ranges.

A device for braking a load is known, consisting of a power cylinder, a rod and an additional pusher.

However, in the known device at the beginning of the return of the load after braking, a large area of the stepped piston enters, and the load begins to move, and at the end of the return of the load, the smallest area of the stepped piston, the additional piston, enters, creating insufficient force to fully return the load, especially trees weight.

The purpose of the invention is to ensure the return of the load to the full braking distance.

This is achieved by the fact that an elastic element is mounted between the piston and the additional pusher.

The drawing shows the proposed device.

It consists of a power cylinder 1, in which a piston 2 is installed with a stem 3 and an additional pusher 4 mounted movably relative to the cylinder and the rod.

Between the piston 2 and the additional pusher 4 is mounted an elastic element made in the form of a spring 5. In the bushing 2 there are channels 6 that connect the cavities 7 and

8 of the power cylinder 1. To regulate the flow of working fluid from one cavity to another, a valve 9 with throttling orifices 10 is pressed against the piston 2 by means of a spring 11.

The device has a spool 12 that connects the cavity 13 of the cylinder 1 to the pressure 14 and the drain 15 pipeline: they are connected respectively to the pump 16 and the tank 17.

The cavity 7 of the cylinder is connected by pipeline 18 to the tank .17.

When the load stops, the force P arising during its movement, transmitted through the piston 2 and the rod 3, compresses the spring 5. The force of the spring increases from 0 to the value determined by the weight of the load being moved. At the same time, the spring 11 is also compressed, the valve 9 opens the channels 7, and the working fluid freely flows from the cavity 8 into the cavity 7,

and the spring force increases evenly until the load stops.

After stopping the cargo, the working fluid from the pump 16 through the pipeline 14 and the spool 12 enters the cavity 13 of the cylinder 1, and the pusher 4 begins to move along the rod 3, puts pressure on the spring 5, which returns the piston 2 with the rod 3 to the original one. until it stops. Cargo returns to full stopping distance. When this spring 11 presses the valve 9 to the end of the piston 2, closing

the channels 6 and the cavities 7 and 8 communicate with each other through the throttling apertures 10, whereby the load returns smoothly after braking.

When the piston 2 with the rod 3 is in its original position, the working fluid from the cavity 13 through the spool 12 and the pipe 15 is discharged into the tank 17, and the spring 5 returns the pusher 4 to its original position until it stops, and the device is ready to repeat the cycle.

Subject invention

A device for braking the load, including a ram, piston, rod and an additional pusher, is delicate, so that, in order to return the cargo to the full braking distance, an elastic element is mounted between the piston and the additional pusher.

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