SU1427043A1 - Trenching apparatus - Google Patents

Abstract

The invention relates to the construction of underground structures by a wall in the ground, namely to the working bodies of earth moving machines. The purpose of the invention is to increase work efficiency by reducing unproductive, power loss. The housing contains drives kinematically associated with cylindrical mills. The latter consist of stators 4 and rotors (P), under the cutters of which there are holes 7 connected to the high pressure chamber (K) 8. The stator 4 is made in the form of an axis rigidly connected to the housing. On the axis rigidly with a gap relative to P installed liner 12, made in the form of a semicylinder. Based on the latter, a seal 13 and a gap regulator 14 are placed on both sides. The gap is connected to K 8 located between the inner surface of P and the stator 4 with an insert 12. The regulator 14 is made in the form of a plate installed in the slot of the axis. The device also has supply pipes, pressure pipes and suction pipes. Part of the fluid coming from K 8 through the pipelines passes through the regulator, the torus 14, gushes through the holes 7 in the cutters 6, which are not in contact with the ground, and does not allow them to clog. Depending on the soil conditions, adjustment is made with the screws of the regulator 14. 1 Cp. Of the file, 3 sludge. 1 :: .7 -. / / Fi (L 4 GO about 4 CO

Description

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The invention relates to the construction of underground structures by the method of a wall in the ground, namely to the working bodies of earth-moving machines,

The aim of the invention is to increase work efficiency by reducing unproductive power losses.

FIG. 1 shows the device | DPJ of trenching, general view; in fig. 2 is a section A-A in FIG. 1; in fig. 3 shows a section BB in FIG. 2

The trenching device has a housing 1, in which drives 2 are installed, kinematically connected with cylindrical mills 3, which can be counter-rotated, consisting of stators 4 and rrtor 5 with cutters 6, under which there are holes 7 connected to the high-pressure chamber 8, supplying the pipelines 9 from the high-pressure pump, discharge to and suction 11 pipes. The stator 4 is made in the form of an axis rigidly connected to the housing 1, on which a rigidly mounted with a gap relative to the rotor 5 an insert 12, made in the form of a half-cylinder, on the basis of which the seal 13 and the regulator 14 are placed on both sides. The gap is connected to a high pressure chamber 8 formed by the inner surface of the rotor 5 and the stator 4 with an insert 12. The gap regulator 14 is made in the form of a plate mounted in the slot of the stator 4 with the possibility of fixing by screws. The milling cutter 3 is rotated by the drives 2 chains 15,

The device works as follows.

When the rotor 5 rotates at the moment of cutting the cutter 6 into the ground from the surface by a high-pressure pump (10-20 MPa) through the inlet pipelines

9 from the chamber 8, the working fluid under high pressure enters the opening 7 of the cutter 6. Part of the liquid passing through the gap regulator 14 flows through the openings in the cutters that are not in contact with the ground, and does not allow the holes in cutters, but at the same time, weak gushing does not erode the trench wall that has already been passed through. Depending on the ground conditions, the clearance of the regulator screws 14 is adjusted,

Claims (1)

Invention Formula 1, A device for driving a trench, comprising a housing, drives arranged therein, kinematically associated with cylindrical mills consisting of stators and rotors, under the cutters of which there are holes connected to a high pressure chamber, supply pipes and pressure and suction pipes, characterized in that, in order to increase work efficiency by reducing unproductive power losses, the stator is equipped with a ground, gap regulator and seal and is made in the form of an axis rigidly connected to the housing, on which the liner is rigidly mounted with a gap relative to the rotor, made in the form of a half-cylinder, on the basis of which placed on both sides is an extension and a gap regulator, the gap being connected to the high-pressure chamber, and the latter is located between the inner surface of the rotor and the stator with an insert, 2, The device according to claim 1, wherein the gap regulator is made in the form of a plate, and in the axis there is a groove in which the plate is installed with the possibility of fixation by means of screws. g I: g fpue. 2 C v