DE3324520A1 - Working vehicle which can be moved in the interior of tubes - Google Patents

Abstract

The invention relates to a working vehicle which can be moved in the interior of tubes in the longitudinal axis there of, and has moving chains which are arranged on both sides of an appliance carrier and mounted revolving in the longitudinal axis of the appliance carrier, the distance of the two moving chains from one another being less than the diameter of the tube and the moving chains having a multiplicity of support rollers projecting beyond the upper edge of each moving chain which are mounted so as to be freely rotatable about axes directed along the longitudinal axis of the moving chains.

Description

Mertes, Alfons, Cranachstr. 49, 43oo Essen 1

"Work vehicle movable inside pipes"

The invention relates to an inside of Pipes with a work vehicle that can be moved along their longitudinal axis.

In many cases it is required inside work from relatively large pipes to be carried out, which must either be carried out continuously over the entire length of the pipe string or must be carried out intermittently over the length of the pipe string. Such So far, work has required a considerable amount of personnel Use, where the work is difficult to carry out, difficult to control and may be dangerous due to the toxic atmosphere inside the pipe.

The purpose of the Erfirn-jng is to be an aid to create with which such work or control processes to be carried out inside the pipe can be carried out without a person having to crawl into the interior of the pipe.

This object on which the invention is based is achieved by a work vehicle which is characterized by running chains arranged on both sides of an equipment carrier and mounted circumferentially in the longitudinal axis of the equipment carrier, the distance between the two running chains being smaller than the diameter of the tube ir; t. and rl i <> Lau f V ett on <μμ <multitude of over the upper edge of each chain in front of

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have standing support rollers which are freely rotatably mounted about axes aligned in the longitudinal axis of the chain.

Such a work vehicle can be driven into a pipe or automatically drives into a pipe a, whereby the chain supports a large area on the inner walls of the pipe. Around to prevent such a work vehicle from getting tends to run up against a wall inside the tube, the support rollers are provided are freely rotatable and, due to the weight of the tool, always ensure that the tool is centered inside the pipe, i.e. the implement is always oriented in a similar way a pendulum, although at the same time it can be moved in the tube's longitudinal axis.

The implement preferably has its own motor drive, which is arranged on the equipment rack and which can be controlled remotely. In order to be able to carry out work inside the pipe, which require a contact with the pipe inner wall, which consists in a rotating movement on the pipe inner wall, is also according to the invention it is provided that the work vehicle or the equipment carrier is equipped with support devices, a locking of the work vehicle inside the pipe and a fixation of the work vehicle allow, so that no rotational movement of the implement can take place due to the rotational movement of the work tool.

The device according to the invention can be used in conjunction with Metal pipes or large concrete pipes

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are set.

Further advantageous refinements are explained in the subclaims.
5

The invention is described below with reference to the drawing. The drawing shows in

Fig. 1 is a side view of the ar-

support vehicle and in

Fig. 2 is a partially sectioned view

in the direction of the implement.

In the following, the invention will be based on a work vehicle be explained, which is used in connection with HetaLlrohren and which the . Task has a lead apron over an X-ray site to lay, so that when X-raying a weld seam in such Meta 11 tubes, a protection of the Workers against x-rays is reached.

In the drawing, 1 denotes the actual work vehicle, which consists essentially of a Equipment carrier 2 consists, which can be of any training. The device carrier carries the one shown Embodiment two crawler chains 3 and 4, which are motor-driven and a forward movement of the work vehicle 1 in the longitudinal direction of the pipe. Instead of the two crawler chains 3 and 4, a medium wide crawler chain can also be used be provided, then corresponding work tools on the outside of the equipment rack 2 can be arranged.

The crawler chains wear support brackets 5 on which to

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Axes 6 support rollers 7 are arranged, the support rollers 7 being mounted freely rotatable about the axes 6 are and the axes 6 are aligned in the longitudinal direction of the tracks, so that so that the support rollers 7 can perform a rotary movement, the transversely to the feed movement of the work vehicle 1 is directed.

On the crawlers 3 a plurality of support brackets 5 are provided with rollers 7, so that a sufficient support for the advancing movement of the work vehicle 1 is achieved inside the pipe.

Each support bracket also carries a counter-pressure roller 8, which is on a support plate 9 of the Device carrier 2 is supported in order to reduce the transverse pressure, which is caused by the curvature of the tube. These counter pressure rollers 8 are also free rotatable about preferably vertically aligned Axes arranged.

Inside the work vehicle 1 shown as AwsführungsbeispieI is a liftable and lowerable Holding device 1o provided on the interposed flexible lines 11 a Lead apron 12 adjoins, which is itself designed to be flexible and therefore when lowering the adapts to the respective curvature of the pipe. At 14 there is one · Weld seam shown and the shown and work described above for tool 1 has the Task of securing the worker and the environment against escaping x-rays when taking x-rays of this weld seam 14. range, whereby by placing the lead apron

COPY

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rl. "

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: and to the modified protease inhibitor (F 2), which by I following primary structure:

j .I ^ N-Leu-Lys-Ser-Phe-Pro-Giu-Val-Val- Gly-Lys-Thr-

i VaI -Asp-Gl η-Al a-Arg-Gl u-Tyr-Phe-Thr-Leu-His-

Tyr-Pro-Gln-Tyr-Asp-Val-Tyr-Phe-Leu-Pro-Glu-Gly-Ser-Pro-Val-Thr-Leu-Asp-Leu-Arg-Tyr-Asn-Arg-Val-Arg- VaI-Phe-Tyr-Asn-Pro-Gly-Thr-Asn-VaI -Va1-Asn-His-Val-Pro-His-Val-GIy-COOH

-14 and a dissociation constant K. = 3.7 χ 10 no! / 1

1 ι

for a chymotrypsin complex (substrate: SucAlaAlaProPhepNA) is marked.

The modified inhibitors according to the invention co-form Chymotrypsin complex compounds, i.e. they inhibit the protease chymotrypsin. As can be seen from Table 1, the Dissociation constants of these complex compounds are comparable to those of Eglin B and C.

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TABLE 1

Eglin C

Modification product F 1

Modification product F 2

₁ (rool / 1)

3.3 χ 10

3.8 χ 10

-14 -14

3.7 χ 10

-14

Substrate: SucAlaAlaProPhepNA

The dissociation constants were determined according to the known method by N.M. Green and E. Work, which is described in Biochemical Journal 54, 347-352.

The enzymatic degradation of EgI ines accordingly leads to modified products whose inhibitory activity has surprisingly been retained in full. The method 2ur production of modified protease inhibitors by limited proteolysis is characterized in that one

a) Eglin B or C is introduced into a suitable buffer system from pH 4 to 7,

b) with a serine proteinase dissolved in a suitable buffer system and, if necessary, with 0.5 % sodium lauryl sulfate,

c) incubated for 2 to 72 hours at 10 to 40 ^ö,

d) the reaction mixture is separated by chromatography and

e) desalinated ...

The process for the preparation of the modified inhibitor F.1 is preferably characterized in that

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Claims (1)

"Work vehicle movable inside pipes" Patent claims: 1o 15th Inside of pipes, in their longitudinal axis movable work vehicle, marked by crawler chains (3, 4) arranged on both sides of an equipment carrier (2) and recirculating in the longitudinal axis of the apparatus carrier (2), the distance between the two crawler chains C 3, 4) from each other is smaller than the diameter of the tube C15) and the tracks (3, 4) have a plurality of over the upper edge of each track (3, 4) projecting support rollers (7) which are aligned in the longitudinal axis of the tracks (3, 4) Axes (-6) are freely rotatable. 2o Working vehicle according to claim 1, characterized gekennzei seframe that the running chains (3, 4) are motor-driven and the drive motor is carried by the device carrier (2). 3. Work vehicle at least according to claim 1, characterized in that the support rollers (7) are arranged with their axes of rotation (6) on support brackets (5) carried by the tracks (3, 4). 4. Work vehicle at least according to claim 1, characterized in that the support brackets (5) are equipped with counterpressure ro LLen (8) which are vertically out aligned axes are rotatably mounted and on an outer support plate (9) of the Device carrier (2). 5. Work vehicle at least according to claim 1, characterized in that the support rollers (7) consisting essentially of metal are coated with plastic. 6. Work vehicle at least according to claim 1, characterized by a hydraulic system carried by the equipment carrier (2) for actuating work tools. 7. Work vehicle at least according to claim 1, characterized in that a flexible lead apron (12) which can be raised and lowered and carried by the equipment carrier (2) is provided as the working tool. 8. Work vehicle at least according to claim 1 and 2, characterized in that the motor drive is formed by an electric motor. 9. Work vehicle at least according to claim 8, characterized in that the motor drive of the work vehicle (1) remote control via a radio control is cash. 10. Work vehicle according to claim 1 to 9, characterized in that the equipment carrier (2) with hydraulically actuated, the work vehicle (1) on the inside of the pipe wall-supporting and locking pressure rams. 11. A work vehicle according to claim 7, characterized gekennzei seframe that the lead apron (12) on the holding device carried by the equipment rack (2) so that it can be raised and lowered <1o) is held by means of flexible suspension cables (11). 2o 12. Work vehicle at least according to claim 1 and 2, characterized in that the power is supplied to the motor drive via a trailing cable.