Drive shaft - · PDF filedrive shaft are used in these operating instructions. ... and the...

Drive shaftOperating Instructions BA42/07

www.reinhausen.com

2 BA 42/07 – Drive shaft

Contents

NOTE!

The product may have been modified after this document went to press.We expressly reserve the right to make changes to the technical data, the design or the scope ofdelivery.In general, the information provided and the arrangements agreed during processing of the relevantoffers and orders are binding.

Contents

1 General .......................................................................................................................................................................... 31.1 Safety labels .................................................................................................................................................. 31.2 Safety instructions ....................................................................................................................................... 31.3 Specified application ................................................................................................................................... 3

2 Design/Types ................................................................................................................................................................. 4

3 Drying transformer ...................................................................................................................................................... 43.1 Drying transformer in furnace .................................................................................................................... 43.2 Drying transformer in tank ......................................................................................................................... 4

4 Installation of the drive shaft .................................................................................................................................... 5

5 Installation of the drive shaft covering .................................................................................................................... 65.1 Installation of the guard plate for the horizontal drive shaft ............................................................... 65.2 Installation of the telescopic protective tube for the vertical drive shaft .......................................... 75.3 Installation of the protective tube for vertical drive shaft with isolator ............................................ 7

6 Installation of the drive shaft with cardan joints ................................................................................................... 86.1 Installation of the drive shaft with cardan joints .................................................................................... 86.2 Installation of the telescopic protective tube for drive shafts with cardan joints (fig. 10) ............. 10

7 Installation of the drive shaft with insulator .......................................................................................................... 12

3BA 42/07 – Drive shaft

1 General

1.1 Safety labels

The following safety labels relating to the operation of thedrive shaft are used in these operating instructions.

These labels must be observed at all times!

1.2 Safety instructions

• All warnings and safety instructions must be observed atall times!Failure to follow the safety instructions may lead to acci-dents and severe personal injury.

• Please read these operating instructions before commis-sioning the equipment!Please read the operating instructions before putting thedrive shaft into service. As the operator, you are responsiblefor ensuring that users of the equipment have fully under-stood the operating and safety instructions.

• Train your staff!Before asking staff to work with the drive shaft, providetraining regarding general and special safety instructionsand accident prevention regulations.

WARNING!

Refers to a potentially hazardoussituation that may result in deathor severe injury.

ATTENTION!Refers to a potentially harmful si-tuation that may result in damageto the the product or adjacentequipment.

NOTE!Contains important informationand special notes.

1.3 Specified application

WARNING!

Failure to motor drive, on-loadtap-changer and transfomer!Installation and commissioning ofthe drive shaft may only be carriedout by qualified, skilled personneland under strict observation ofthese Operating Instructions.It is the responsibility of the user toensure that the drive shaft is usedfor the specified application only.For safety reasons, do not carry outany unauthorized work, i. e. duringinstallation, modification, commis-sioning and alteration of the driveshaft without first consulting MR!The trouble-free operation of mo-tor drive, on-load tap-changer andtransformer may be put at risk.

NOTE!The serial numbers of motor-drive,on-load tap-changer or off-circuittap-changer, drive shafts and be-vel gear must correspond.

1 General


The drive shaft is the mechanical connection between motor-drive and on-load tap-changer head or off-circuit tap-chan-ger head. The change from the vertical to the horizontal direc-tion is performed by the bevel gear (see dimension drawing892916).

Accordingly, the vertical drive shaft has to be mounted bet-ween motor-drive and bevel gear and the horizontal drive shaftbetween bevel gear and on-load tap-changer or off-circuittap-changer.

The drive shaft is designed as a square tube and is coupled atboth ends by two coupling brackets and one coupling bolt tothe driving end of the drive shaft ends of the unit to be con-nected.

Minor axial displacement can be tolerated as long as it doesnot exceed 35 mm per 1000 mm square shaft length (that cor-responds to 2°).

Square tubes, coupling brackets, coupling bolts, screws, andlocking washers are corrosion-resistant. We therefore recom-mend not to apply the same external coating to these parts asto the transformer tank.

The square tubes and the vertical guard plate are supplied inoverlengths (graded standard lengths). These parts must be cutto the correct length when mounted on the transformer. Inrare cases the inner tube of the telescopic protective tube hasto be cut.

2 Design/Types

2 Design/Types

Standard length Motor-drive Manual drive

400 • •

600 • •

900 • •

1300 • •

1700 • •

2000 • •

2500 not admissible •1)

Maximum total shaft length of the drive - last pole = 15 m!

Table 11) l> 2000 only possible for vertical installation without shaft

protection! Telescopic protective tubes for manual drives withvertical dimensions V1>2462 should be delivered vertically,similar to the motor drive unit with intermediate bearing.

Graded standard lengths of square tubes, see table 1

ATTENTION!When mounting the drive shaftmake sure that the shaft ends to beconnected are exactly aligned.Otherwise the trouble-free opera-tion of the motor-drive and the on-load tap-changer off-circuit tap-changer cannot be guaranteed.

3 Drying transformer

3.1 Drying transformer in autoclave

3.2 Drying transformer in tank

If you are drying the active part in the transformer tank, thedrive shaft may remain attached to the transformer duringdrying.

CAUTION!

If drying the transformer in a au-toclave, the drive shaft must not bedried as well.


4 Installation of the drive shaft

A - Dimensionbetween shaftends

LR - Length of squaretube

1 8900564M 2 3

Proceed for installation as follows (see fig. 1):

• Determine dimension A between the two shaft ends.• Cut the square tube to the dimension LR = A - 9 mm.

Deburr the cut.• Loosely attach one coupling piece (2 coupling brackets) with

4 screws M6 x 25/w. s.10 and 4 locking washers and slide itonto the square shaft up to the dead stop. Tighten the screwswith a torque of 9 Nm. See section 5.2 for installation of thetelescopic protective tube!

• Insert the coupling bolt into the lower shaft end and slide thesquare shaft over it together with the coupling piece(fig. 2). Provide the opposite end with a coupling bracketand the coupling bolt. Fit in the square shaft by the end andcon-nect it with the second coupling bracket below by 4self-locking screws M6/w.s. 10 and 4 locking washers.

• Set an axial clearance of 3 mm between the coupling boltand the upper coupling piece (fig. 3).

• Preliminary tightening of the screws at approx. 6 Nm inpreparation for the alignment.

• Carry out final tightening of the screws only after aligningthe on-load tap-changer and the motor drive unit (seeBA 138, chapter 4.3 "Coupling on-load tap-changer andmotor drive"). Tighten the screws M6/w. s. 10 with a max.torque of 9 Nm.

ATTENTION!Check to make sure that the motorprotective switch is tripped beforestarting the coupling procedure,otherwise the motor drive can startup accidentally.

NOTE!Grease the coupling bolts, the cou-pling brackets and the ball heads(e. g. with adhesive grease ISOFLEXTOPAS L 32).

NOTE!The middle bore holes of the coup-ling brackets can be used for leadseals.

4 Installation of the drive shaft

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MRMR

5 Installation of the drive shaft covering

A – Dimension betweenshaft ends

LSR – Length of the extendedtelescopic protective tubes

B - Inside width betweenthe housings

LSB - Length of the guardplate

LSB = B - 2

4

To protect the vertical drive shaft, it needs to be covered witha telescopic protective tube. The horizontal drive shaft needsto be protected with a guard plate.

5.1 Installation of the guard plate for the horizontaldrive shaft

Proceed for installation of the guard plate as follows (fig. 4):

• Determine dimension B over the connecting flanges of thehousings.

• Cut down the guard plate to dimension LSB = B - 2 mm,Deburr the cut and protect it against corrosion by a coat ofpaint.

• To install the horizontal guard plate (uniform lengthsbetween 400 and 2,300 mm), please pay attention to thefollowing:

Slide the guard plate over the connecting flanges on the on-load tap-changer and the bevel gear and fasten at each endwith a hose clip (5 Nm, fig. 5).


5

ATTENTION!According to IEC standard 60214,all driving shafts located on theoutside of the transformer need tobe protected with safety coverings.


5.2 Installation of the telescopic protective tube forthe vertical drive shaft

To install the telescopic protective tube (uniform lengthsbetween 200 and 1150 mm) please pay attention to the follo-wing (fig. 6).

• Determine dimension A (V1 = A + 453) between the shaftend of the ED and the bevel gear.

• Now shorten the inner tube on the non-slotted side asfollows without deforming it. Ensure that it is deburredproperly so that it can slide easily in the outer tube:

for dimension A = 170-190 mm shorten inner tube to size200 (outer tube = 200)for dimension A = 191-1130 mm shorten inner tube to sizeA + 20 (outer tube = 200)for dimension A = 1131-1598 mm use size 700 inner tubewithout shortening (outer tube = 1150)for dimension A = 1599-2009 mm use 1150 size for bothtubes without shortening

• Before the vertical drive shaft is installed, the adapter ringmust be located around the bearing neck of the bevel gearand the coupling bolts must be pushed in (fig. 6).

• Now the two lower coupling brackets must be screwed ontothe drive shaft.

• The two protective tubes (inner tube with slot facing down-wards and outer tube pushed over inner tube) must now bepushed over the drive shaft mounted on the driven shaft ofthe motor-drive unit and this must be aligned with the bevelgear.

• Push in the upper coupling bolts. Then mount the uppercoupling brackets with four self-locking screws (M6 x 25/w.s. 10) to the drive shaft with an axial play of 3 mm. Nowattach (5 Nm) the lower protective tube (inner tube) with ahose clip on the bearing collar of the motor drive. Then pushthe upper protective tube over the adapter at the bevel gearand attach (5 Nm) on both slotted sides with hose clips.

6


5.3 Installation of the protective tube for verticaldrive shaft with isolator

The procedure for the installation with isolator is similar tosection 4.2, except that in addition to the adapter ring at thebevel gear an insulated spacer ring must be positioned on thebearing collar of the motor drive before the drive shaft is in-stalled.

Adapter ring


6.1 Installation of the drive shaft with cardan joints

Installation of the drive shaft with cardan joints is designedas vertical drive shaft between motor-drive and bevel gear.Technically, horizontal design is also possible.

To install the cardan joints, please proceed as follows(fig. 10, page 10):

• The shorter cardan joint supplied must be connected to theball head of the motor-drive unit via cardan joint bolts. Thesecond cardan joint with O-ring must be fitted to the bevelgear. If a cardan joint is fitted to the upper gear unit, a cardanjoint with an inner hub diameter of 25 mm must be used. Thecardan joint bolt is secured (5 Nm) with the hose clip on theexpansion bellows.

6 Installation of the drive shaft with cardan joints


NOTE!Make sure that the position of theopposite cardan joint straps corre-sponds!Do not allow the expansion bellowsto be damaged when the cardanjoint folds up.

97 8

• Provisionally connect the loose shaft ends of the joints to apiece of angle bar and align (fig. 7).

• Determine dimension A between the shaft ends.• Cut down the square tube shaft to LR = A + 106 mm

and deburr the cuts.



NOTE!Grease the coupling bolts, the cou-pling brackets and the ball heads(e. g. with adhesive grease ISOFLEXTOPAS L 32).

ATTENTION!By the correct coupling of motor-drive and on-load tap-changer oroff-circuit tap-changer you ensurethat the on-load tap-changer is sureto switch over before the motor-drive stops so that the position ofthe on-load tap-changer or off-cir-cuit tap-changer and motor-driveare the same in any operating posi-tion.Otherwise there is a danger to mo-tor-drive, on-load tap-changer andtransformer.

• Mount lower coupling brackets loosely on the square tube.Mount coupling bolt(s). Put in square tube and push com-pletely down so that no axial play remains between couplingbolt and coupling bracket.Screw both coupling brackets with 4 self-locking screws M6x 25/w. s.10) and 4 locking washers with a tightening torqueof 9 Nm (fig. 8). This securely connects (no clearance) end ofshaft and coupling piece.

• See section 6.2 for installation of the telescopic protectivetube!

• Provide the upper shaft end with a coupling bolt.• Connect the square tube and the shaft end by 2 coupling

brackets and 4 self-locking screws M6 x 25/w. s.10 and4 locking washers (fig. 9).

• Set an axial clearance of 3mm at one end between thecoupling bolts and upper coupling brackets.

• Preliminary tightening of the bolts at approx. 6 Nm in prepa-ration for the alignment.

• Carry out final tightening of the screws only after aligningthe on-load tap-changer and the motor drive unit (see BA138, chapter 4.3 "Coupling on-load tap-changer and motordrive"). Tighten the screws M6/w. s. 10 with a max. torque of9 Nm.



10

LR - Length of square tube

A - Distance between shaft ends

890063

Motor-drive

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Bevel gear

LR = A + 106

Pos. Designation Unit

1 Adapter ring d82 x 102 1




5 rotary protective tube 2

6 inner tube 1

7 outer tube 1

8 hose clip 87 - 112 5

6.2 Installation of the telescopic protective tube fordrive shafts with cardan joints (fig. 10)

Before beginning installation, each of the two telescope tubesmust be shortened to dimension A/2 + 120 mm (A is the di-mension between the ends of the cardan joint).

The adapter (item 1) on the bearing collar of the ED and theadapter (item 4) of the bevel gear must be mounted.

Now slide the deburred and shortened (according to chapter5.1) square tube over the upper cardan joint end as far as itwill go.

Before finishing installation, the following components haveto be threaded from below onto the square tube, followingthe sequence as per description:

1. upper rotary protective tube (item 5), with the long end ofthe tube pointing up

2. adapter (item 3)3. outer tube (item 7), with the slit side pointing down4. inner tube (item 6)

Now slide the adapter (item 2) and the lower rotary protectivetube (item 5) with the long end of the tube pointing up overthe inner tube.



Mount a screw clamp on the square tube in order to avoidthat the components slide off during the installation of thecoupling brackets of the shaft tubes.

To finish the installation of the telescope tube all the abovementioned components must be tightened. Proceed from topto bottom.

For this purpose be sure that the plastic adapters are locatedon the respective end of the rotary protective tube and thatthe telescope tube is only slid into the upper or the lower ro-tary protective tube as far as the adapter is wide (item 3).

Slide the rotary protective tube over the adapter (item 4)between the protective tube and the bevel gear. Then fit theadapter (item 3) between the rotary protective tube and theouter tube and secure the protective tube on both sides withhose clips (5 Nm, item 8).

The installation of the lower protective tube between the EDand the inner tube has to be carried out with an adapter (item 2)and two hose clips (item 8).

1. Slide the rotary protective tube over the adapter (item 1)between the protective tube and the motor drive unit.

2. Fit the adapter (item 2) between the rotary protective tubeand the inner tube .

3. Secure (5 Nm) the protective tube on both sides with hoseclips.

At the end, secure (5 Nm) the two telescope tubes towardseach other with a hose clip.


7 Installation of the drive shaft with insulator

A model with insulator of the vertical drive shaft is available(fig. 11) for insulating installation of the drive shaft.

The insulator can also be used in connection with the jointshaft (fig. 12).

1211

from 898598

Type with insulator ( max. = 2°) Type with insulator ( max. = 20°)

7 Installation of the drive shaft with insulator

from 898598


Bevel gearing

Dimension drawing8929167M

The direction of rotation is definedduring ordering.

www.reinhausen.com

© Maschinenfabrik Reinhausen GmbH Phone +49 941 40 90-0Falkensteinstrasse 8 Fax +49 941 40 90-11193059 Regensburg, Germany E-Mail [email protected]

BA 042/07 EN • 02/12 • F0007707

Drive shaft - · PDF filedrive shaft are used in these operating instructions. ... and the...

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Transcript of Drive shaft - · PDF filedrive shaft are used in these operating instructions. ... and the...