SU548690A1 - Working equipment of the single-bucket excavator - Google Patents

Description

one

The invention relates to the field of single-bucket mining excavators, namely, swiveling buckets.

The working equipment of a single-bucket excavator, including a handle, a bucket with a pump-free drive, contains a hydraulic cylinder and a piston with a rod, a boom with a saddle bearing, and a mechanism for turning the bucket.

A disadvantage of this design of the working equipment is the impossibility of rotating the bucket in any position of the handle, since the contact of the rod and the saddle bearing occurs only at the end of the stroke of the handle.

This circumstance does not allow permanently to receive a variable angle of cutting of the bucket in the process of digging and drying, to turn the bucket for unloading in any position of the handle.

The aim of the invention is to provide the possibility of changing the cutting angle of the bucket and turning it at any position of the handle.

This goal is achieved by the fact that the rod is fixed on the handle, and the hydraulic cylinder is mounted on the saddle bearing, and the rod and piston cavity of the hydraulic motor are connected

between them is a pipeline equipped with a bucket turn control valve connected to the bucket turning mechanism.

The drawing shows the working equipment of the single-bucket excavator.

The working equipment of the single-bucket excavator consists of the handle 1, the bucket 2 and the mechanism 3 of turning the bucket. Hinge bucket

mounted to the rods 4 and the hydraulic cylinders 5 of the rotation of the bucket. The pressure in the system is created by mixing inside the hydraulic cylinder 6 mounted on the saddle bearing 7, piston 8, the rod 9 of which is permanently connected to the arm 10 of the rear stop of the handle. Depending on the direction of movement of the handle, pressure is created in cavity A or in cavity B of the hydraulic cylinder 6. The connection of the cavities of the hydraulic cylinder with the pressure line 11 and the drain line 12 is carried out respectively by the spools 13 and 14 only at the moment of the bucket turn. If, in the process of mixing the handle, it is not necessary to rotate the bucket, the spool valve

the device connects the cavities A and B, as a result of which the fluid is pumped from one cavity to the other, and there is no pressure in the pressure line.

In the presence of pressure in the pressure line 11 (which corresponds to the inclusion of the spool excavator (valve) 13 in the “bucket turn” position), the spool 15 will connect one of the cavities B or G of the swiveling hydraulic cylinder to the pressure line, as a result of which P1tok 4 is mixed, right or left thereby turning the bucket 2 around the hinge 16 of the handle to the desired angle. At the same time, the valve 17 connects the opposite cavity to the drain line, from which the liquid through the valve 14 enters the cavity of the hydrocyliidra 6, where a vacuum is created.

During the operation of the bucket, the spools 15 and 17 serve as hydrases;

Claims (1)

Invention Formula Working equipment of a single-bucket excavator, including a handle, a bucket with a pump-free drive, containing a hydrocyliidre and a piston with a rod, an arrow with a saddle underhead and a bucket turning mechanism, characterized in that, in order to make it possible to change the angle of cutting of the bucket and turn it at any time. the crankshaft, the rod is fixed on the arm, and the hydraulic cylinder is a saddle bearing, the rod and the piston cavity of the hydraulic cylinder are interconnected by a pipeline equipped with a KOBjHa rotation control valve, connected with bucket turning mechanism.