SU617593A1 - Heading shield work-performing member - Google Patents

Description

one

The invention relates to the field of tunneling equipment, namely to the executive bodies of the tunnel shields.

The executive body is known. It includes cutting blades with engines and a handle with hydraulically turning 1.

The disadvantage of the design is insignificant work efficiency.

A known actuator includes a cutting disc with an engine, a handle with a hydraulic shaft. A turning shaft, a driving gear with a shaft and a sleeve {2.

When such a body operates, as a result of self-obscuration, the reliability of its operation decreases.

The aim of the invention is to increase the reliability of the body's work by reducing the degree of self-rubbing at the bottom.

This is achieved by the fact that the actuating device is equipped with a gear with a rotary gear connecting the handle with a rotary part, and the disk motor is located inside the wheel shaft, the sleeve of which is movably installed by means of trolleys with guides and hydraulic sleeves.

FIG. 1 image. Executive body, side view; in fig. 2 - the same, top view.

The executive unit includes a cutting disk 1, a cutting disk engine 2 located inside the hollow shaft 3, a handle 4 with a hydraulic jack 5 of rotation. The handle is connected to the rotary part of the gearbox 6, which rotates in the axles of the fixed part of the gearbox 7 relative to the drive gear 8. The latter is rigidly connected to the hollow shaft and interacts with the actuator 9 located on the sleeve 10 connected to the hollow shaft with a locking ring 11. Sleeve. mounted by erasing it 12 and 13 on the carts 14 connected to the rods of the transfer hydraulic jacks 15, which are fixed on the shield shell 16.

The executive body works as follows.

The handle 4 with the cutting disk 1 is set by the hydraulic jack 5 to the initial position beyond the vertical plane.

In this position, the handle along with the executive body is mounted on the carriages 14 by hydraulic jacks 15 relative to the shell of the shield 16 for the thickness of the layer of rock separated from the massif.

Then, the actuator begins to process the central part of the vertically flat bottom, moving by means of a hydraulic jack 5 radially from the periphery to the center of the cross section of the excavation with the cutting of the cutting disk into the massif and separation of the rock layer by breaking it off.

In the center, the handle 4 is turned by the wheel 8 relative to the irodol axis of the loading at an angle corresponding to the length of the arc equal to the diameter of the cutting disk. Next, the cutting disk, the division of the rock layer, performs a reverse radial movement to the position beyond the vertical plane. The disk is then rotated by the wheel 8 relative to the longitudinal axis of production at the new entry. Then the cycle repeats.

The total angle of rotation of the wheel 8 does not exceed 360 °. The processed part of the slab takes the form of a hemisphere with a diameter smaller than the diameter of the excavation. When the executive body is subsequently fed, the diameter of the treated part of the slab increases to the diameter of the production by the thickness of the removed layer of rock.

To process the non-destructive rock layer adjacent to the production perimeter, the handle 4 is set perpendicular to the pitch, but the longitudinal axis of the production, and in this fixed position is fed to the bottom. After inserting the cutting disc into the array, the handle 4 is turned by the wheel 8 in a vertical plane by 180 ° into one and

the other side, processing the remaining peripheral layer of rock and preparing the place for the new position of the shield shell.

The treatment with such hemispherical layers is carried out to the extent of care, safe under the conditions of the roof and walls of the excavation, thereby increasing the reliability of the executive body.

Claims (2)

Invention Formula The executive body of the tunnel shield, which includes a cutting disc with an engine, a handle with a hydraulic shaft a drive gear with a shaft and a sleeve, characterized in that, in order to increase the reliability of the organ by reducing the degree of self-destruction of the downhole, it is provided with a connecting handle a gear wheel with a rotating part, the disk motor being located inside the wheel shaft, the sleeve of which is mounted; movably by means of carriages with guides and hydraulic glands movement. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 184775, cl. E 21S 27/24, 1965. 2. USSR author's certificate number 374450, cl. E 21S 27/24, 1971. 2 9 / V / / j-: j