SU459564A1 - Working equipment of the single-bucket excavator - Google Patents

Description

one

This invention relates to single bucket rollers.

The working equipment of a single-bucket excavator is known, which includes a bucket rigidly connected with a handle made in the form of a trough, and a rope-block mechanism with winches and a gear for lifting and turning the handle with a bucket.

However, in such equipment, it is difficult to combine operations associated with lifting the handle and it is impossible to turn the bucket.

In order to increase the efficiency of the excavator in the proposed working equipment, the handle lifting mechanism is kinematically connected with the bucket turning mechanism by means of a shaft on which drums of different diameters are mounted, with the ends of the lifting mechanism ropes fixed on them, and gears interacting with the ends of the rails, the other ends of which pivotally connected to the bucket.

The drawing shows an axonometric projection of the proposed excavator working equipment.

The working equipment of the excavator includes the handle 1, on which the bucket 2 is pivotably mounted. The bucket 2 is connected to the handle 1 by means of toothed racks 3 which engage with gear 4 shafts

5 mounted on the handle 1. The shaft 5 is designed to rotate the bucket. On the rotary platform of the excavator, a rope-block lifting mechanism 6 of the handle 1 is installed. The lifting mechanism 6 includes polyspast systems 7 and winches 8 and 9. Reels 10 and 11 are firmly seated on the shaft 5. The free end of the cable 12 of the winch 8 is fixed on the drum 10, and 11, the free end of the rope 13 of the winch 9. The ends of the ropes 12 and 13 are fixed on diametrically opposite sides of the shells of the drums 10 and 11.

The handle is raised and lowered by means of the winches 8 and 9 of the lifting mechanism 6, provided that the speeds of rotation of their drums are the same. In this case, the bucket 2 is fixed against rotation by the racks 3. The bucket is also rotated with the help of winches 8 and 9, but different rotation speeds (up to the opposite ones) are reported to the drums of the winches. In this case, the ropes 12 and 13 are reduced to an equal length, which leads to the rotation of the drums 10 and 11. Since the ends of the ropes 12 and 13 are fixed on diametrically opposite sides of the sides of the drums 10 and 11, the drums rotate the shaft 5 in the direction where the end of the rope is fixed Winches, working with greater speed. The shaft 5 of the gears 4 moves the racks 3 of the bucket 2. With the help of the racks 3, the bucket rotates relative to the handle. When digging on the bucket 2, it is mainly the forces that tend to turn it down relative to the arm. In this case, the rope 12 is loaded more than the rope 13. To equalize the forces in the ropes 12 and 13, the drum 10 has a diameter larger than the drum I. The presence of a mechanical drive for turning the bucket makes it possible to obtain greater forces and speeds of rotation of the bucket and to avoid installing additional equipment on the handle Since the turn is carried out using the same lifting mechanism of the working equipment.

Subject invention

Working equipment of a single-bucket excavator, which includes a bucket rigidly connected to the handle made in the form of a trench, and a cable-block mechanism with winches and gears of raising and turning the handle with a bucket, characterized in that, in order to increase the efficiency of the excavator, the mechanism the lifting of the handle is kinematically connected with the bucket turning mechanism by means of a shaft on which drums of different diameters are mounted with the ends of the ropes of the lifting mechanism fixed to them

and gears that interact with the ends of the rails, the other ends of which are pivotally connected to the bucket.