FI88888B - Process and device for use in the repair of a papermaking machine - Google Patents

Description

88888

Method and apparatus for paper machine refurbishment Förfarande och anordning vid iständsättning av en pappersmaskin 5

The invention relates to a method and an apparatus for refurbishing a paper machine.

The machining of the return holes for the lubricating oil in the drive housings of the drying cylinders of the paper machine has required the disassembly of the steam pipes during the refurbishment of the paper machine. In the shallow working space between the steam pipes and the drive housing, there has not already been a tool that would have allowed the machining oil return hole to be machined and threaded with the cylinder steam and condensate pipes in place. Especially with paper machine upgrades 15, as speed has increased and lubricating oil recirculation rates have increased, it has been necessary to increase the return oil holes in the drive housings of the paper machine cylinders. This hole drilling work has therefore been time consuming, as the steam and condensate pipes have been dismantled and re-installed after machining.

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The solutions of U.S. Pat. Nos. 3,741,671, 2,622,457 and 4,419,032 are known from the prior art, which show various drill solutions in which the rotational torque can be transmitted via a rather long shaft: to a drilling target on the drill shaft. However, the solutions 25 according to the US publications have not been able to show a structure ____ which would be suitable for the above-mentioned machining object for machining the return holes for the lubricating oil of the drive housings of the drying cylinders of a paper machine.

The object of the invention is therefore to improve the above-mentioned problem. The object of the invention is a method and a device with which it is possible to work in a low working space without having to carry out time-consuming dismantling and re-installation work of environmental devices.

In particular, the object is a method and a device with which the return holes for the lubricating oil of the drive boxes of a wide-sized paper machine can be expanded and with which "... the device can also further perform the threading of the widened hole.

The object of the invention is in particular a device which is easy to transport by hand in connection with the workpiece and which device is safe and easy to use.

The object of the invention has been achieved by a method which is mainly characterized in that in the method the rotary motor itself is connected to drive the first axis from the end of the end point to be machined at its end and the method itself is provided by moving the rotary motor, the first axis and the tool as a unit, the aforementioned unit being guided in the guides of the base body at the end of the first axis at the side of the workpiece and the base frame being supported into the working space and in which case, however, the arrangement of the device allows a sufficient k yttökotelon surface-normal feeding movement.

The device according to the invention is essentially characterized in that the device comprises a rotary motor rotating the shafts at an end opposite the bevel gear of the first shaft and that the device comprises at said shaft end a base body and a movable body part movable relative thereto, comprises an electromagnet acting as a stand at the drive end of the shaft, by means of which the device can be supported during machining in the drive housing of a paper machine, whereby the device arrangement according to the invention allows the drive housing tool to have sufficient clearance between the drive housing and condensate tubes.

Figure 1 schematically shows the application of the invention.

Figure 2A shows the device according to the invention in an axonometric view in a machining situation.

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Figure 2B shows a schematic representation of the transmission arrangement of the device according to the invention.

Figure 1 shows the application of the invention. paper machine dryer-5 cylinder S drive housing K. Lubricating oil return holes K below the drive housing K! has been widened in prior art solutions so that the condensate and steam pipes P have first been dismantled in order to reach the application by means of a machining tool. The low working space E between the steam and condensate pipes P and the operating housing K has not made it possible to machine with conventional devices according to the prior art. The condensate and steam pipes P are thus first removed and only then are the lubricating oil holes Kx widened and threaded. This phase of work has thus been time consuming and has slowed down the refurbishment of the paper machine and thus extended the overall downtime of the paper machine. The invention provides such a device that the low working space E can be accessed without dismantling the condensate and steam pipes P.

Fig. 2A shows a refurbishment device 10 according to the invention. The device is shown in connection with a refurbishment object K, i.e. a drive housing 20 of a paper machine cylinder. The condensate and steam pipes P in place during machining are marked with a dotted line in the figure for the sake of clarity of the representation.

The rehabilitation device 10 comprises a base body 11. The base body 11 comprises a guide 12 and further a handwheel 13 and a stand 14, preferably an electric magnet. By means of the electromagnet 14, the rehabilitation device 10 is attached to the rehabilitation object K as shown in the figure in the operating housing.

The repair device 10 further comprises a movable body portion 15 comprising a first body portion 16 and a second body portion 17 at an angle substantially 90 ° to it. The first body portion 16 comprises a slide portion 18 adapted to move in the guide of the base body 11. 12. By turning the handwheel 13, the movable body part 15 is moved in the guide 12 as shown by the arrow Lx. The direction of movement Lj ^ is also the feed direction of the tool to be machined and substantially perpendicular to the surface T of the lifting object K to be machined.

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A first shaft 19 is connected to the movable body part 15. A second shaft 21 is connected to the first shaft 19 via an angle and reduction gear 20, the end of which has a tool 22 for machining the repair object. The angle and reduction gear is most preferably a worm gear. Its e Miia 5 gives a high torque.

A rotary motor 23 rotating the shaft 19, preferably a hand-held electrically operated hand drill, is further connected to the apparatus. The rotational movement of the output shaft of the drive motor 23 is further transmitted to the first shaft 19 and from the first shaft 19 via the angle and reduction gear 20 to the second shaft 21 and further to the tool 22 working on the refurbishment object, as shown in the figure.

The rotational movements of the tool 22 are indicated by the arrow L2.

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Fig. 2B schematically shows the transmission of the rehabilitation device 10. The portable hand drill 23 is connected to a first shaft 19 which rotates the second shaft 21 and further the tool 22 through the angle and reduction gear 20. The figure schematically shows the angle and reduction gear 20. It is preferably a helical gear and provides a high torque for the tool. The movable body portion 15 comprises not only a slide portion 18 but also a rack 24 or the like which engages a gear 25 cooperating with the rack 24 rotated by the handwheel 13. Thus, the feed 25 in the normal direction of the surface T is rotated and moved Li presented.

Claims (6)

1. Method of installing a paper machine, especially for widening the lubricating oil heels in the driving case of the paper machine and providing them with threads in place at the point of use of the paper machine without dismantling the drying cylinder mop and condensate tube, whereby the connection is connected an insertion device comprising an elongated first shaft (19), to which first shaft a second shaft (21) is connected via an angular gear (20), the second shaft comprising a tool (22) processing the object, characterized in that, in the method, the rotary motor itself (23) is connected to drive the first shaft (19) from the side of the insertion point (Ki) to be machined from its end and the feeding movement of the tool itself (23) is accomplished in the process by bringing the rotary motor , the first shaft (19), the gear shaft (20), the second shaft (21) and the tool (22) act as a single unit while the aforementioned unit is guided to conduits (12) of the base body (11) which are located adjacent to the processing site and that the base body (11) is supported during processing by means of an electromagnet ( 14) which acts as a support advantageous to the drive case (K), while the electromagnet (14) is located at the end of the first shaft (19) where the rotary motor is also located, whereby the low working space (E) between the drive case (Kx ) and the condensate tubes (P) with a tool and with the device arrangement still allow a sufficient feeding movement for the tool in the direction of the normal of the surface of the drive case. 2. Device for installing a paper machine to widen the lubrication of the shaft in the drive case of the paper machine and provide them with threads without disassembling the meadow and capacitor tubes, which device comprises an elongated first shaft (19) to be communicated with the insertion point (K), to which the first shaft (19) is connected a second shaft (21) via an angular gear (20), the second shaft (21) comprising a tool (22) processing the object, known as -35, that the device (10) comprises a rotary motor (23) which rotates the shafts at the opposite end relative to the winch. 8. The gear shaft (20) of the first shaft (19) and the device comprising a base body (11) at the end of said shaft and a movable body part (15) which can be brought to move stroke 1 in relation thereto. the first shaft (19) rotated by the drive motor (23) is connected and the base body (11) comprises an electromagnet (14) which acts as a support by means of which the device can be supported during processing against the drive case by the paper machine, the device arrangement according to the invention allows for sufficient clearance for the tool which processes the drive case 1 in the low working space (E) between the drive case (Kj) and the capacitor tube (P). Device according to claim 2 in the insertion work of a paper machine, characterized in that the device comprises a hand drill (23) which is connected to bring a first shaft (19) to rotate. 4. Apparatus according to claim 2 or 3, characterized in that the movable body part (15) comprises a first body part (16) and a second body part (17) in an essential angle of 90 ° relative to it and that the first body part (16) Includes a socket part (18) arranged to move type 1 lines (12) in the base body (11) and the first body part (16) of the movable body part (15) includes a toothed rod (24) or correspondingly arranged to be functionally connected to the gear wheel (25) driven by a hand wheel (13), the feeding movement of the working tool (22) being accomplished by pivoting on the hand wheel (13) while the movable body part (15) and the associated first shaft (19), the second shaft (21), the angular gear (20) and the working tool (22) are brought into contact with a single packet in the shaft alignment of the hole to be machined. 30