SU386094A1 - CUTTING HEAD OF HORIZONTAL MACHINE - Google Patents

Description

one

The invention relates to the field of construction with a trenchless method of pipelines, collectors and tunnels.

A well-known horizontal drilling machine cutting head, including a faceplate with windows for the exit of the developed soil, mounted on the drive shaft, is geared and a tooth.

However, the working body of this machine does not provide effective penetration of wells in weak, unstable, water-infested soils. There is a danger of a breakthrough in the completed tunnel, and when working under roads, there is a danger of subsidence of the railroad and roadway.

In order to prevent the breakthrough of the float and to ensure the safety of work in the proposed head, an additional face washer with sector notches was installed on the drive shaft in front of the faceplate, and the windows for the exit of the developed soil were installed.

One of the faceplates can be provided with stops for transferring vras, to the other faceplate.

In addition, the faceplate can be equipped with swivel iozhami placed along its perimeter.

Fig, 1 shows the described head, side view; .on FIG. same, the view from the butt.

The cutting head includes a faceplate 1 with openings for the exit of the developed soil, an indent 2, a tooth 3, an additional faceplate 4 with sector cuts.

The plates 1 n 4 are mounted on the drive shaft} 5.

The washer 4 is provided with stops 6 for transmitting rotation in the process of cutting the soil and allowing the faceplate 4 to rotate relative to the faceplate J at a certain angle when the drive shaft is reversed. This ensures the overlap of the output windows of the faceplate 1 in the case of work in the zone of floating grounds.

The swinging knives /, mounted on the periphery of the faceplate 1, when cutting a well, cut off the soil along its outer contour, and when changing the direction of rotation of the drive shaft, they create additional resistances that help keep the plate from turning. The cutting head is enclosed in a casing.

The cutting head works as follows. When the drive of the cutting head is switched on, rotation from the drive shaft through the stops of the faceplate 4 is transmitted to the plate.

Injector, teeth and swinging zero: and develop the soil, which through the weekend

Windows in the faceplate 1 gets into the inside of the cabinet, from where it is transported in a known manner.

When the cutting head enters the zone of unstable floating grounds, the direction of rotation of the drive shaft changes. At the same time, the friction forces of the ground planer friction and additional resistances from the swinging knives keep the faceplate 1 from turning, and the faceplate 4, due to the relative rotation on the shaft, closes the exit windows and thereby prevents the possibility of breaking through the quicksand into the finished tunnel.

Subject invention

1. Cutting head of horizontal drilling machine, including faceplate with

Windows for the exit of the developed soil, mounted on the drive shaft, the indent and the tooth, characterized in that, in order to prevent the breakthrough of the flood and to ensure the safety of the work, an additional pie-cut plan was installed on the drive shaft, over the said faceplate developed soil exits.

2. The heading for and. 1, characterized in that one of the faceplates is provided with stops for transmitting rotation to the other faceplate.

3.Head lo pp. 1 and 2, characterized in that the faceplate is rotatable

knives placed along its perimeter.

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