SU398724A1 - EXCAVATOR FOR THE DEVELOPMENT OF TRANSCHES UNDER THE PIPELINE ON THE GROUND - Google Patents

Description

The invention relates to continuous machines designed for digging trenches under a pipeline laid on the ground, and can be used in the construction of trunk gas pipelines, mainly of large diameter.

A excavator is known for developing trenches under a pipeline laid on the ground, including basic machines with earth-moving tools and a trencher.

However, this excavator does not provide the required quality of laying the pipeline, since the laid pipeline remains in the trench for a long time uncharged, and it is possible to fill it with compacted soil.

The purpose of the invention is to improve the laying quality of the pipeline.

This is achieved by the fact that the trencher is made in the form of a frame with interacting with the walls of the trench on which the scrapers are mounted with the possibility of lifting, and the trencher is connected to the base machines using, for example, a flexible connection. In addition, the scrapers are mounted on the frame with the possibility of fixation in a predetermined position, and the flexible connection is made with blocks mounted on the frame and with branches interacting with

grabs installed on each base machine.

FIG. 1 shows an excavator, a general view; figure 2 is a transheater, rear view; in fig. 3- transheter, top view; in fig. 4-section on LL in FIG. 3; in fig. 5- capture on one base machine, general view; in fig. 6- capture by another base machine, general view.

The excavator includes base machines /, a two-rotor earth-moving working body 2 and a trenching device 5, in turn, including scrapers 4, skis 5 of the undercarriage, skis 6 of the steering mechanism.

lifting mechanism 7 and roller 5, interacting by means of cable 9 with grippers 10 mounted on the frames of the rotors. Pre-excavator works as follows. The basic machines U, moving on both sides of the pipeline lying on the ground, tow a two-rotor of the zemleroyny working body 2 and a trenching bed 3. The digging working body, developing the trench, carries the soil into the dumps located symmetrically on both sides of the trench. After the pipeline, descending under its own weight, approaches the bottom of the trench, the trencher 5 with its scrapers 4 shifts the dumps and

he brings them down gradually into the trench.

3

Thus, after the passage of the excavator, the insulated pipeline laid out on the day surface of the route is moved to the design subsurface position.

Subject invention

for trenching

Claims (3)

1. Excavator soil pipelines, including lying on base machines with earth-moving workers and a trencher, characterized in that, in order to increase the cathode line, the piling trenching in the form of a frame with a recipient four trenching walls and guides, on which scrapers are mounted with the possibility of lifting, with the trenching machine connected to the base machines using, for example, a flexible link. 2. An excavator according to claim 1, characterized in that the scrapers are mounted on the frame with the possibility of locking in a predetermined position. 3. An excavator according to claim 1, wherein the flexible connection is made with blocks mounted on a frame and with branches cooperating with grippers mounted on each base machine.  (  .,. ,,. yli W 96 7 J 5 iPua. one (Rig Z 6 Step fPas.S