SU1601291A1 - Grab - Google Patents

Abstract

The invention relates to the mining industry and m. intended for the development of narrow trenches. The goal is to increase productivity and reduce energy consumption. The grab includes a housing (K) 1, in which a frame (P) 2 is mounted with the possibility of axial movement, buckets 8 and a suspension bracket to the base machine. All buckets are pivotally connected to K 1 and by means of grids 7 to R 2. The cutting edges of each K 8 are located in the same vertical plane with the axis of the hinge connecting this bucket to K 1. All the buckets 8 are located stepwise and symmetrically about the K 1 axis so that the bucket 8, located above the neighboring bucket 8, is placed at a greater distance from the K 1 axis. A tubular centralizer 12 is attached to K 1. By means of suspension ropes P 2 is moved relative to K 1 downwards, as a result of which the buckets 8 scoop up the rock. The step shape of the trench contributes to an increase in the depth of the grab in the ground. To unload the bucket 8, move P 2 relative to K 1 upwards. 4 il.

Description

This is the same vertical plane with the axis (the joint connecting this bucket with K 1. All the buckets 8 are arranged stepwise and symmetrically about the axis K 1 so that the bucket 8, located above the neighboring bucket 8, is placed at a greater distance from the K 1 axis A tubular centralizer 12 is attached to K 1. By means of suspension ropes, P 2 is moved relative to K 1 downwards, as a result of which the buckets 8 scoop up the rock. The step-shaped trench contributes to an increase in the grab burial depth into the ground. 1 up. 4 ill.

; The invention relates to the mining industry and may be intended for the development of narrow trenches. The purpose of the invention is to increase productivity and reduce energy | bones.

. FIG. 1 shows a grapple in the initial phase of digging; in fig. 2 -; the same, with loaded buckets; in: FIG. 3 - bucket attachment unit; in fig. 4 - grab, top view.

The grab consists of body 1, inside

: three of which are POSSIBLE

The frame 2 is mounted. On the frame 2 and on the case 1, blocks 3 of the upper and lower yoke of the chain pulley connected by rope 4 are installed. The rope 5 and eyelets 6 are fixed to the frame. The ropes 4 and 5 form a suspension bracket to the base machine. Goats 6 are hinged to the lugs 6 by means of tg 7, which are also hinged on the body 1 with the possibility of rotation around the finger 9. The buckets 8 are installed stepwise with the possibility of their rotation when digging the soil outwards and are arranged in pairs symmetrically relative to the vertical axis housing 1.

Any bucket located above the adjacent bucket is located at a greater distance from the body axis. The cutting edge of each bucket is located in the same vertical plane with the axis of the finger 9. Inside the bucket 8, discharge plates 10 are installed. The housing 1 is provided with interacting 1 mi with the frame 2 with the guiding planes 11 and the tubular centralizer 12.

The grab operates as follows. The axis of the trench is to drill a well at a distance from each other equal to the grab width of the grab. With the help of the rope 5, the grab is lowered with the buckets 8 open until they stop against the wall of the well. Thereafter, rope 5 is loosened.

five

0

five

Q Q

d d

55

and the cable 4 is pulled in, after which the frame 2 is lowered and the buckets 8 connected to the frame 2 by means of the tongs 7 and 7 cut into the ground (Fig. 1). With further tightening of the rope 4, the buckets 8 turn around the fingers 9 upward and fill with soil (Fig. 2). Then, synchronous pulling of ropes 4 and 5 is turned on, and when the grapple leaves the trench (Fig. 2), it is turned to the place of unloading. When the grapples 8 are unloaded, the rope 5 is braked and the rope 4 is unhithered, and under the weight of the body 1 and the cut ground, the body 1 moves along guide planes 11 relative to the frame 2 to the lower position. At the same time, the rods 7 rotate the buckets 8 in the opposite direction, and the buckets 8 are unloaded using the unloading plates 10. After unloading the buckets 8, the grapple is brought to the trench and lowered by a rope 5.

The digging cycle is repeated until a trench of the desired depth is formed. As the grab deepens, the tubular centralizer 12, getting into the drilled well and moving along it, provides for the grab steady movement.

Claims (1)

Invention Formula A grab, including a housing, in which a frame, buckets pivotally connected to the rods and arranged stepwise and symmetrically relative to the axis of the housing, and a suspension bracket to the base machine, are installed with axial displacement, and the suspension to the base machine, in order to increase productivity and reduce energy intensity the buckets are hinged to the body, the free ends of the m and h are hinged to the frame, and the cutting edge of each bucket is located in the same vertical plane with the axis of the hinge connecting 1601291X five this bucket with a body, with the bucket being located at a greater distance from the axis located above the adjacent bucket, the body. FIG. 2 Yu Fig.Z