SU143281A1 - Machine for cleaning the outer surface of the existing main pipeline - Google Patents

Description

Basically auth. St. No. 132472, a machine has been described for cleaning the exterior surface of an existing trunk pipeline, including a gearbox, centering rims, brushes and scrapers rotating with gear rims. The gearbox in this mask is made in the form of a plug, which encloses the pipe along the outer diameter, and the gear rims and the centering rims of the working body are made detachable.

The present additional invention extends the scope of use of the main invention by improving the cleaning quality of existing main pipelines located in trenches, reducing the design and widening the range of application of the maschine. The latter is achieved due to the fact that the proposed mask can, during operation, pass through the clamps and patches welded to the pipeline at the tank.

The essence of the invention is that the working body of the pre-machine is made in the form of a replaceable unit, installed in accordance with the diameter of the pipeline being cleaned. The gear of the working body is shaped as a ring, completely covering the pipe along the outer perimeter (diameter). The drive of the working body and the running gear is carried out from the common drive. The transmission from the drive to the gearbox of the torque is made through a friction clutch, which makes it possible to stop the working body when the machine passes through the clamps and patches welded on the pipeline.

FIG. 1 shows the proposed maschine, side view; in fig. 2- the same, end view; in fig. 3 is a section along A-A in FIG. 2; in fig. four-

No. 143281-2

remote control ,. q - replaceable working body of the machine, end view; in fig. o-too, in a vertical axial section; in fig. 7 - view along C1 arrow - nd (: - y-a, g. In ya of Fig. 8 - view along arrow B in Fig. 5.

Those} 1chicha ska,, adg with the teristics of the proposed machine:

1.1 DIRT ETHER | of pipe sought in inches: 8, 10, 12, 14, 16, 18 and 4 °. } .i - 5 I

24T.IP drive.: .- e “.r AL-32/4 1.8 kvg 1420 rpm rotator motor when cleaning pipes 08 + 12.

Electric motor AL 32/4 2.8 ket. 1420 - when cleaning pipes 014 + 20.

3. The speed of movement of the machine through the pipe with a gear ratio of i 274 is 100 running meters. meters per hour.

4. The speed of movement of the working tool through the pipe is 9.25 m / s.

5. Working tools - self-sharpening knives.

6. The lubrication system - drip.

7. The weight of the machine is 180 kg.

8. Overall dimensions (without control panel): length 900 mm, width 700 mm, height 900 mm.

The proposed high-speed cleaning machine is a unit that is installed on the pipeline, moves through it and cuts off the old insulation with self-sharpening knives.

The machine consists of six main nodes; installed on the frame: working device /, clutch 2, intermediate gear 3, running gear with worm gear 4, control panel 5, electric motor 6 and magnetic actuator 7.

The machine moves through the pipe with the help of two pairs of traveling wheels 8. The driving pair of traveling wheels is rotated from the common electric motor 6 through intermediate and worm gearboxes with a total ratio of / 274.

The main unit of the machine is a replaceable tool / (FIG. 3), which is a single-stage spur gearbox. The body of the working body 1 together with the hollow crown 9 enclosed in it has a connector that provides the ability to install the machine on the pipeline being cleaned without a pipe connector. The crown 9 with the knife holders W mounted on it revolves around the pipe being cleaned in four guide rollers P.

The lubricant of the working body is dropping. The oil is poured into the oil tank 12, from where it drops 13 drops through the jet nozzle into the cavity of the body of the gearbox of the working device, where it is sprayed.

Under the action of centrifugal forces arising from the rotation of the ring, the counterweights 14, together with the levers 15 and the rocker arms, overcome the resistance of the pressure springs 16, are thrown to the periphery, and the knives 17, mounted on opposite ends of the rockers 15 and the levers 18, are pressed to the pipeline surface to be cleaned.

When the crown is stopped, the knives are retracted from the pipe to the neutral position by the springs 16, ensuring the free passage of the mattings through the clamps and patches welded to the pipeline.

The clutch (Fig. 4) is used to shut off the working body when the machine does not move through the clamps and patches welded on the pipeline, as well as to protect the working body from breakage in case of sudden overloads. The clutch is controlled by a lever on the control panel placed on the curb of the trench.

The intermediate gearbox serves to transmit the torque from the electric motor drive to the worm gearbox of the running gear.

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№.1,43281.

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