RU2730561C1 - Universal platform on magnetic wheels for in-pipe devices - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to pipeline transport and can be used in designing in-pipe diagnostics devices, as well as other devices used in construction and overhaul of pipelines. Purpose of the present invention is creation of universal platform on magnetic wheels for in-tube devices, which allows: independently get on wheels after possible overturning in pipe and allowing to install on it single unit of in-tube device, which makes it more compact and convenient for internal mounting; manoeuvring in complex piping with DN ≥ 300 mm. Platform comprises magnetic motor-wheel modules, a longitudinal hinge with a rotation limiter connected to the shaft of the geared motor, to perform actions to get it onto the wheels after falling on the side surface in the pipe, additionally comprises lifting platform hoist mechanism, which provides possibility to turn front axle by angle required for magnetization of front axle wheels to pipe surface, and radius surface of roof of in-tube device provides falling to side surface, wherein universal centre of gravity on magnetic wheels is located at its front axis.

EFFECT: proposed universal platform on magnetic wheels for in-tube devices is optimal for construction on its basis of in-tube flaw detectors and other devices, and possibility to independently get on wheels excludes occurrence of extraordinary situations during diagnostic works.

1 cl, 5 dwg

Description

The invention relates to pipeline transport and can be used to create devices for in-line diagnostics, as well as other devices used in the construction and overhaul of facilities with piping.

Currently, both traditional in-line flaw detectors and autonomous robotic scanners-flaw detectors are used for in-line diagnostics.

In-tube shells move in the pipe under the action of the gas flow, while the pipe should not change the flow area. Such devices can only be used on existing main gas pipelines.

Known universal platform on magnetic wheels for in-line devices (RF patent No. 2644432), containing magnetic motor-wheel modules, a lever lifting mechanism mounted on its front axle and pivotally connected to a lifting cargo platform, providing optimal geometry of a universal platform on magnetic wheels for maneuvering in the piping, as well as the contact of all four wheels with a curved support surface, while the lever lifting mechanism provides an optimal, adjustable distance of the working body of the inline device installed on the cargo platform from the pipe surface when performing diagnostic and other types of work.

The disadvantages of the known platform is that when it falls in the pipe, while moving along the lateral surface of the pipe, due to adhesion of metal debris to the magnetic wheels or other reasons, the autonomously moving platform becomes unrecoverable.

The closest in technical essence and the achieved result to the claimed invention is a platform for an in-line flaw detector on magnetic wheels (RF patent No. 2605234), containing magnetic motor-wheel modules, a longitudinal axis connecting the triaxial chassis of the platform to each other with longitudinal hinges with rotation limiters, while the longitudinal axis has a transverse hinge, and the extreme longitudinal pivot bushings are connected to the shafts of the gear motors installed on the extreme axes of the platform chassis in the longitudinal direction.

The disadvantage of the known platform is a three-axle chassis, on which it is impossible to mount a single block of the in-line device, since for setting the platform on the wheels, after tipping it, it is necessary to rotate each of the three axles of the chassis relative to each other.

The aim of the present invention is to create a universal platform on magnetic wheels for in-line devices that allows:

- independently stand on wheels after a possible overturning in the pipe and allowing the installation of a single block of the in-line device on it, which makes it more compact and convenient for internal installation;

- to carry out maneuvering in complex piping with DN≥300 mm.

The essence of the present invention lies in the fact that the claimed universal platform on magnetic wheels for in-line devices, containing magnetic motor-wheel modules, a longitudinal hinge with a rotation limiter connected to the shaft of the gear motor, according to the invention, for carrying out the actions of getting it onto the wheels after fall on the side surface in the pipe, additionally contains a lifting mechanism of the cargo platform, which provides the ability to rotate the front axle at an angle necessary to magnetize the wheels of the front axle to the pipe surface, and the radius surface of the roof of the inline device provides a fall on the side surface, while the center of gravity of the universal a platform on magnetic wheels is located at its front axle.

FIG. 1 shows a universal platform on magnetic wheels for in-line devices, where:

1 - front axle;

2 - rear axle;

3 - gear motor;

4 - wheel;

5 - non-magnetic pad;

6 - ring magnet.

7 - longitudinal hinge;

8 - rotation limiter;

9 - cargo platform;

10 - power lever;

11 - screw pair;

12 - in-line device;

13 - video camera;

14 - pipe.

FIG. Figures 2-4 show the sequence of actions for turning the universal platform on magnetic wheels for in-line devices on wheels when it falls on its side in the pipe.

FIG. 5 shows the sequence of actions for turning over the wheels of a universal platform on magnetic wheels for in-line devices when it falls in a pipe on the front or back wall.

A universal platform on magnetic wheels for in-line devices consists of a front axle 1, a rear axle 2 with gear motors 3 mounted on them, on the axles of which wheels 4 with non-magnetic linings 5 and ring magnets are installed 6. Front axle 1 and rear axle 2 are connected between a longitudinal hinge 7 with a rotation limiter 8 at an angle a, ensuring the adherence of all wheels to a curved surface (see Fig. 1), while the longitudinal hinge 7 is mounted on the axis of the gear motor 3 longitudinally mounted on the rear axle 2. On the rear axle 2 a cargo platform 9 and a lifting mechanism are hingedly installed, the power lever 10 of which is also hingedly connected to the cargo platform 9. The lifting mechanism is equipped with a gear motor 2 with a screw pair 11. An in-line device 12 with a video camera 13 is installed on the cargo platform 9.

The claimed universal platform on magnetic wheels works as follows.

A universal platform on magnetic wheels for in-line devices is installed on the inner surface of a steel pipe 14. Ring magnets 6 through wheels 4, made of electrical steel with high magnetic properties, ensure the magnetization of the product to the inspected pipe 14 (steel). The presence of the longitudinal hinge 7, connecting the front axle 1 and the rear axle 2, ensures that all wheels 4 fit completely to the curved surface of the steel pipe 14. Then, power is supplied to the gear motors 3 of the wheels 4. When the wheels 4 rotate in one direction (counterclockwise - see Fig. 1), the product moves forward. When changing the rotation to the opposite - back. The rotation of the left and right wheels 4 in opposite directions ensures the rotation of the platform in place. When the universal platform on magnetic wheels for in-line devices moves, along the pipe 14 to abut its curved surface of all four wheels 4, the existing angle of rotation of the front axle 3 in the transverse direction is sufficient with the lifting mechanism lowered.

When falling on its side, while moving along the inner surface of the pipe 14, the universal platform on magnetic wheels for in-line devices, thanks to non-magnetic nozzles 5 on the side surfaces of the wheels 4 and the radius roof of the in-line device 12, takes the position according to FIG. 2. Next, the lifting mechanism is switched on, the screw pair 11 of which, pivotally connected to the power lever 10, raises the cargo platform 9 - see FIG. 3. Thus, the universal platform on magnetic wheels for in-line devices in the pipe 14 rests on three points: A, B, C. The operator, under the control of the video camera 13, turns on the gear motor 3, on the shaft of which the longitudinal hinge 7 is installed, through the limiter rotation 8 turning the front axle 1 (see Fig. 4) until the wheels 4 touch the inner surface of the pipe 14, while the inclination of the front axle 1 to the inner surface of the pipe 14 occurs due to the center of gravity of a universal platform on magnetic wheels for in-line devices located at the front axle 1. The magnetized wheels 4 of the front axle 1 are the basis for setting the rear axle 2 on the wheels 4. This occurs when the shaft of the gear motor 3 continues to rotate, while the front axle 1 is stationary, and the rear axle 2 rotates relative to it until its wheels 4 touch the surface of the pipe 14. Then the loading platform is lowered 9. The universal platform on magnetic wheels for in-line devices is ready for loan of work in normal mode.

When the universal platform on magnetic wheels for in-line devices falls in the pipe 14 on the front or rear wall, it is necessary to ensure its position in accordance with FIG. 5, i.e. turn across the pipe 14 due to rotation in opposite directions of the wheels 4 of the support axle (in Fig. 5 this is the front axle 1). Further, the wheels 4 of the support axle (see Fig. 5) rotate counterclockwise and raise the universal platform on magnetic wheels for in-line devices until it overturns onto four wheels 4, i.e. until its center of gravity moves to the right of the reference axis. The universal platform with magnetic wheels for in-line devices is ready to continue working as usual.

The presence of non-magnetic linings 5 on the wheels 4 makes it possible to reduce the torque when performing the operation of placing the platform on the wheels, since when it is tilted on its side, the wheels 4 are not magnetized to the pipe 14.

The proposed universal platform on magnetic wheels for in-line devices is optimal for building in-line flaw detectors and other devices on its basis, and the ability to independently stand on wheels eliminates the occurrence of emergency situations during diagnostic work.

Claims (1)

A universal platform on magnetic wheels for in-line devices, containing magnetic motor-wheel modules, a longitudinal hinge with a rotation limiter connected to the shaft of the geared motor, characterized in that for carrying out the actions of getting it onto the wheels after falling onto the side surface in the pipe it additionally contains lifting mechanism of the cargo platform, which provides the ability to rotate the front axle at an angle required to magnetize the wheels of the front axle to the surface of the pipe, and the radius surface of the roof of the in-line device provides a fall on the side surface, while the center of gravity of the universal platform on magnetic wheels is located at its front axle ...

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