RU1799414C - Shovel excavator - Google Patents

Abstract

Usage: the invention relates to the working equipment of bucket excavators. SUMMARY OF THE INVENTION: an excavator comprises a running trolley, a rotary platform of a PP, working equipment mounted on a PP and including a bucket (K) with a hoisting rope, a handle (P), a balancer, an arrow. To create maximum pressure force at the beginning of the digging, P is additionally connected to the PP by means of a power cylinder (SP), which is bolted to the PP, the rod (W) of which is pivotally connected to P so that the point of attachment of the SC to it is lowered relative to the point of attachment of P to the balancer by means of ropes connected with a pressure winch, the pressure cable is fixed on an axis installed in the longitudinal guides of the SC and rigidly connected to Ш, and the return cable is fixed on P. Under the action of the applied force created by the weight K, P, by the balancer, also force generated by the return rope pressure ,, W rope starts to move, which, acting on P, turns it, and lifting room portion K force generated SB transmits effect on P. 3 yl. Yo

Description

The invention relates to the field of earth moving machinery, and in particular to the working equipment of bucket excavators.

The purpose of the invention is to expand the functionality by increasing the head when digging at a level of a hundred.

In FIG. 1 shows a single bucket excavator, general view; in FIG. 2 - the same, with different positions of the bucket during its working stroke; in FIG. 3 - node I in FIG. 1.

The excavator comprises a running trolley 1 on which a rotary platform 2 is mounted, working equipment mounted on a rotary platform 2 and including a bucket 3 to which is attached

a hoisting rope 4, the other end of which is fixed to the drum of the hoist winch 5, a handle 6 pivotally connected to the bucket 3, and also pivotally connected to the balancer 7 mounted on the turntable 2, arrow 8, pivotally mounted on the turntable 2, with the head block 9, and suspended from a biped rack 10, by means of cables 11.

To create maximum pressure at the beginning of digging, the handle 6 is additionally connected to the rotary platform 2 by means of a ram 12 pivotally mounted on the rotary platform 2; and the rod 13 of which is pivotally connected to the handle 6, so that

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the point of attachment of the master cylinder 12 to it can be lowered relative to the point of attachment of the handle 6 to the balancer 7, for example, from 1/3 of the length of the handle to the point of attachment of it with the bucket 3. On the axis 14 mounted in the longitudinal guides 15 the cylinder 12 and is rigidly connected to the rod 13, a pressure line 16 is fixed, which bends around the block 17 mounted on the cylinder 12, is mounted on the drum of the winch head 18. mounted on the turntable 2, on the diametrically opposite side of the drums of the winch head 18 is fixed return cable 19, which is around the block 17, is attached to the arm. ty 6, the rear end of the bucket 3 by means of a rod 20, connected to the handle 6.

The operation of the device is as follows.

When winding the lifting 4 and pressure 16 ropes from the drums of the hoist winch 5 and the pressure 18 and winding the return rope 19 to the drums of the winch pressure 18, the bucket 3 returns to its extreme rear position (Fig. 2), penetration into the ground occurs as a result of the applied force created the weight of the bucket 3, the handle 6, the balancer 7, as well as the force generated by the return rope 19.

When winding the ropes 4 and 16 on the drums of hoist hoists 5 and pressure 18, the handle b with the bucket 3 rotates relative to the balancer 7. The pressure rope 16 and return rope 19 give the rod 13 reciprocating motion relative to cylinder 12. As a result of the reciprocating the movement of the rod 13, the latter begins to affect the handle 6, turning it, and also as the bucket 3 rises, part of the force created by the rod 13 exerts a pressure force on the handle 6, and part of the force from the lifting rope 4 turns the balancer 7.When simultaneous operation of lifting winches 5 and pressure

18, the process of excavating or loading the bucket 3 with soil is ongoing.

The application of the proposed bucket excavator, working equipment

which is equipped with a power cylinder, additionally connecting the handle with a rotary platform, the rod of which is connected by means of ropes to a pressure winch, which improves efficiency

works by increasing the radius of action of the handle at the digging level. This is due to an increase in the pressure head of the working equipment at the beginning of digging, in addition, the use of a power cylinder

simplifies the design of excavator working equipment.

Claims (1)

SUMMARY OF THE INVENTION A single-bucket excavator comprising a turntable mounted on a running trolley, working equipment mounted on a turntable and including an arrow, balancer, articulated with a lower end connected to the turntable, and the upper hingedly connected to a handle that is pivotally connected to the bucket, and controls for working equipment with a winch and ropes, with the exception of the fact that, in order to expand functionality by increase in pressure at the beginning of digging; working equipment is equipped with a power cylinder articulated on a swivel a platform, the rod of which is pivotally connected to the handle, and the point of attachment of the power cylinder to it is located below the point of attachment of the handle to the balancer, and the cylinder has an axis and blocks installed in it and is connected to the pressure winch by means of the cables enveloped by it, the rope is fixed on the axis of the cylinder, which is rigidly connected to its rod, and the return cable is fixed on the handle. Fas. I FIG. 2