EP0107439A1 - Verfahren und Vorrichtung zum Befestigen oder Lösen einer Riemenscheibe auf einer Kurbelwelle - Google Patents

Verfahren und Vorrichtung zum Befestigen oder Lösen einer Riemenscheibe auf einer Kurbelwelle Download PDF

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Publication number
EP0107439A1
EP0107439A1 EP83306155A EP83306155A EP0107439A1 EP 0107439 A1 EP0107439 A1 EP 0107439A1 EP 83306155 A EP83306155 A EP 83306155A EP 83306155 A EP83306155 A EP 83306155A EP 0107439 A1 EP0107439 A1 EP 0107439A1
Authority
EP
European Patent Office
Prior art keywords
crankshaft
shaft
tool
pinion
torque
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP83306155A
Other languages
English (en)
French (fr)
Inventor
Trevor Gordon Curtis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
Ford Motor Co
Original Assignee
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
Ford Motor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Werke GmbH, Ford France SA, Ford Motor Co Ltd, Ford Motor Co filed Critical Ford Werke GmbH
Publication of EP0107439A1 publication Critical patent/EP0107439A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B17/00—Hand-driven gear-operated wrenches or screwdrivers
    • B25B17/02—Hand-driven gear-operated wrenches or screwdrivers providing for torque amplification

Definitions

  • the present invention relates to an apparatus for exerting torque on a bolt securing a pulley to an engine crankshaft to enable the pulley to be secured to, or released from, the crankshaft.
  • the bolt normally used to secure a crankshaft pulley is a high torque bolt and considerable torque needs to be applied both to tighten and release the bolt.
  • Complex and expensive torque multiplication tools are known and conventially used for this purpose..However, because access to the bolting is usually limited it is often not possible to use such tools. The task is rendered still more difficult by the tendency for the crankshaft to rotate when a high torque is applied to the bolt securing the crankshaft pulley.
  • the present invention seeks to mitigate the foregoing problems.
  • a method of applying torque to a bolt for securing a pulley to one end of a crankshaft of an engine comprising fitting a spanner to the head of the bolt, and applying a torque to the crankshaft by means of a tool comprising a manually rotatable pinion meshing with a starter ring gear on a flywheel arranged at the other end of the crankshaft.
  • a tool for a exerting torque on an engine crankshaft to permit tightening and untightening of a bolt securing a pulley to the crankshaft comprising a body adapted to be fixed relative to the engine housing, a shaft journalled in the body, a pinion fast in rotation with the shaft and engageable with a starter ring gear on the engine crankshaft and means on the shaft for enabling the shaft to be manually rotated.
  • the invention is based upon the realisation that use may be made of the starter ring gear of the engine as part of a torque multiplication device to enable considerable torque to be applied between a bolt securing a pulley to the crankshaft so as to allow the bolt to be tightened or released.
  • the bolt may readily be prevented from rotating relative to the engine by the use of a spanner fitted to the head of the bolt and brought to rest against the engine block and the engine crankshaft may then be rotated by manually rotating the pinion engaging the starter ring gear.
  • the torque multiplication gear achieved by the relative diameters of the pinion and the ring gear, the task of removing and fitting the pulley is simplified by the improved access at the rear of the engine.
  • the tool body is intended to be secured to the engine block or bell housing in the hole usually occupied by the starter motor and this hole is normally readily accessible.
  • the tool it is preferable to design the tool to permit it to be used for different engines and for this reason it is desirable to provide several mounting holes or arcuate mounting slots to accomodate different positioning of securing bolts.
  • the pinion it is preferable for the pinion to be releasably secure to the shaft so that it may be replaced by a different sized pinion to suit the ring gears on different engines.
  • Figure 1 shows an engine block 1 mounted between two side members 2.
  • the crankshaft axis is indicated by the chain dotted line 3.
  • a pulley 4 is mounted at one end of the crankshaft. This is bolted onto the crankshaft 3 by means of a bolt on the crankshaft axis.
  • a starter motor is normally mounted at the other end of the engine block 1, at the other end of the engine block 1,.
  • the starter motor has a pinion which projects through an opening in the engine.block or bell housing and which, when in operation, engages a ring gear 5 fixed to a flywheel on the crankshaft.
  • the tool which is shown in Figure 2 will now be described.
  • the tool has a body 6, with a central bore and a shaft 7 which passes through the bore.
  • a pinion 8 is keyed to one end of the shaft and the other end 9 of the shaft projects through the body '6 and has a shaped end 10.
  • This shaped end may have an internal square drive and/or an external shape engagable by a spanner.
  • the body 6 has slotted location holes, indicated schematically at 11, by means of which it can be secured to the engine block 1.
  • the starter motor which normally projects into the housing of the ring gear 5, is removed.
  • the tool shown in Figure 2 is then fitted and the pinion 8 is introduced in place of the starter motor pinion, through an aperture in the housing and into engagement with the ring gear 5.
  • the body 6 is then secured to the engine block 1 in a position such that the teeth of the pinion 8 remain in mesh with the teeth of the ring gear 5.
  • a spanner 12 is applied to the head of the bolt which holds the crankshaft pulley on the crankshaft. This tool is lodged against a fixed part of the engine so as to hold the head of the bolt steady.
  • torque is applied to the shaped end 10 of the shaft 7 to turn the shaft and the pinion 8 on the shaft, to cause the ring gear 5 to rotate. Because of the relative diameters of the pinion 8 and the ring gear 5 (as can be seen in Figure 3) a considerable multiplication of the torque applied to the shaft 7 is produced when the torque is transferred to the crankshaft 3.
  • the pinion 8 may be removable from the shaft 7 and may be interchangeable with other pihions of different sizes.
  • the location holes 11 are slotted for the same reason, so that the body can be correctly mounted on engines having fastening points in different places.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
EP83306155A 1982-10-25 1983-10-12 Verfahren und Vorrichtung zum Befestigen oder Lösen einer Riemenscheibe auf einer Kurbelwelle Withdrawn EP0107439A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8230350 1982-10-25
GB08230350A GB2129351A (en) 1982-10-25 1982-10-25 Exerting torque on an engine crankshaft

Publications (1)

Publication Number Publication Date
EP0107439A1 true EP0107439A1 (de) 1984-05-02

Family

ID=10533814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83306155A Withdrawn EP0107439A1 (de) 1982-10-25 1983-10-12 Verfahren und Vorrichtung zum Befestigen oder Lösen einer Riemenscheibe auf einer Kurbelwelle

Country Status (2)

Country Link
EP (1) EP0107439A1 (de)
GB (1) GB2129351A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004039535A1 (en) * 2002-11-01 2004-05-13 Ian Anthony Burrows Handleless motor vehicle pulley brace

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2491727A (en) * 1946-12-03 1949-12-20 Louis F Gotting Flywheel rotating tool having jaws applicable to the rim of the flywheel
US2507846A (en) * 1946-04-29 1950-05-16 Isaac D Zitzerman Crankpin turning tool
US2614445A (en) * 1949-11-25 1952-10-21 James T Clark Flywheel spanner wrench with tooth engaging abutment
CH314420A (de) * 1953-08-18 1956-06-15 Cookson Eric Vorrichtung zum Befestigen und Festziehen eines Maschinenteils an einem andern Maschinenteil
US3321985A (en) * 1964-11-09 1967-05-30 Roland T Wheeler Engine turn-over attachment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB270131A (en) * 1926-07-22 1927-05-05 William Gordon Improvements relating to detachable vehicle wheels
BE522220A (de) * 1951-11-08
FR2372004A1 (fr) * 1976-11-25 1978-06-23 Usinor Dispositif de desserrage et de serrage d'ecrous
GB2027624A (en) * 1978-08-04 1980-02-27 Bossine R Tool for rotating a nut or bolt head

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507846A (en) * 1946-04-29 1950-05-16 Isaac D Zitzerman Crankpin turning tool
US2491727A (en) * 1946-12-03 1949-12-20 Louis F Gotting Flywheel rotating tool having jaws applicable to the rim of the flywheel
US2614445A (en) * 1949-11-25 1952-10-21 James T Clark Flywheel spanner wrench with tooth engaging abutment
CH314420A (de) * 1953-08-18 1956-06-15 Cookson Eric Vorrichtung zum Befestigen und Festziehen eines Maschinenteils an einem andern Maschinenteil
US3321985A (en) * 1964-11-09 1967-05-30 Roland T Wheeler Engine turn-over attachment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004039535A1 (en) * 2002-11-01 2004-05-13 Ian Anthony Burrows Handleless motor vehicle pulley brace

Also Published As

Publication number Publication date
GB2129351A (en) 1984-05-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19841102

17Q First examination report despatched

Effective date: 19860213

R17C First examination report despatched (corrected)

Effective date: 19860904

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870217

RIN1 Information on inventor provided before grant (corrected)

Inventor name: CURTIS, TREVOR GORDON