GB2504498A - Rotary coupling having preloaded springs and axially movable pistons/pins - Google Patents

Rotary coupling having preloaded springs and axially movable pistons/pins Download PDF

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Publication number
GB2504498A
GB2504498A GB201213561A GB201213561A GB2504498A GB 2504498 A GB2504498 A GB 2504498A GB 201213561 A GB201213561 A GB 201213561A GB 201213561 A GB201213561 A GB 201213561A GB 2504498 A GB2504498 A GB 2504498A
Authority
GB
United Kingdom
Prior art keywords
driver
shaft
driven
rotary coupling
coupling
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.)
Granted
Application number
GB201213561A
Other versions
GB2504498B (en
GB201213561D0 (en
Inventor
Richard John Meehan
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.)
BARWIT CONTROL SYSTEMS MH Ltd
Original Assignee
BARWIT CONTROL SYSTEMS MH Ltd
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 BARWIT CONTROL SYSTEMS MH Ltd filed Critical BARWIT CONTROL SYSTEMS MH Ltd
Priority to GB201213561A priority Critical patent/GB2504498B/en
Publication of GB201213561D0 publication Critical patent/GB201213561D0/en
Publication of GB2504498A publication Critical patent/GB2504498A/en
Application granted granted Critical
Publication of GB2504498B publication Critical patent/GB2504498B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B66B11/0484—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with a clutch or a coupling system between several motors, e.g. switching different speeds, progressive starting, torque limitation, flywheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/04—Driving gear manually operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/12—Driving gear incorporating electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D11/14—Clutches in which the members have interengaging parts with clutching members movable only axially

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A coupling unit for automatically engaging driver 1 and driven 2 shafts by means of preloaded springs 7 and axially moveable pistons 8 or pins by engaging on first rotation of the driver shaft 1 in either direction. The springs may be pre-loaded by a lead screw 11, which causes movement of a gimbal ring 13 to bias the pistons 8 or pins towards associated driving recesses in a driven hub 1. On rotation of a driver hub 2, the drive pins are forced, by springs 7, into contact with the associated driving recesses/holes and cause the driven hub 1 to rotate with the driver hub 2.

Description

Title: Rotary Coupling
Background:
This invention relates to an automatically engaging rotary coupling principally but not exclusively to couple an auxiliary to a primary drive on a passenger or goods lift (commonly known as a power wind) or any driver shaft to a driven shaft. Most public passenger lifts have a standby motor and power supply to recover lifts to a suitable landing to release passengers in the event of mains power supply failure. The engagement of the standby power wind mechanism to the main drive is normally carried out by a hand. This operation can be both time consuming and laborious. The principal difficulty is that the engagement of spur type or helical gears in the axial direction requires precise alignment and involves the physical movement of engaging components in the axial and or radial direction to achieve engagement. The addition or inclusion of the Rotary Coupling to a power wind drive chain will reduce the time and effort used to engage the power wind motor and gearbox to the main drive and effect the rescue and recovery of stranded passengers in a timely manner.
The proposed design of coupling enables the coupling of driver and driven shafts by mechanical non-friction means to automatically engage in a positive way on first movement of the driver shaft and hub in either direction. 2.
Introduction:
The following will describe the function and operation of the Rotary Coupling and refer to Figure 1 showing cross section of coupling in disengaged mode through pistons 8.
Figure 2 showing section of coupling in disengaged mode through return springs 10.
Figure 3 showing section of coupling in disengaged mode with alternative withdrawal mechanism to spring.
Description:
The invention proposes the rotational coupling of pins and holes between two hubs mounted on driver and driven shafts axially aligned and thus achieving mechanical coupling between driver and driven components. Random radial misalignment of driver pins and holes in the driven hub 1 is overcome by first rotation of the driver hub 2 and pins 8 in either direction. The invention proposes any number of Pre-loaded springs 7 mounted in driver hub 2 attached to engaging pistons or pins 8 the pins or pistons being equal in number and PCD to the holes in the driven hub 1. Rotation of lead screw 11 by servo motor or hand winding or lever causes movement of the gimbal ring 13 and thrust bearing 5 against back plate 3 and causes the springs 7 and pistons 8 to pre-load against the randomly misaligned driven hub 1. The distance of movement of the gimbal ring is governed by limit switch if electrically operated or mechanical stop if hand operated. On rotation of the driver hub 2 the drive pins are forced forward by the springs 7 to engage with the driven hub 1 by a measured amount and cause the driven hub and shaft to rotate coupled to the driver shaft.
Disengagement of the coupling is achieved by the reversal of the lead screw 11 to a set point governed by limit switch or mechanical stop if hand operated. Movement of the gimbal ring 13 thrust bearing sand back plate 3 to move away from the driven hub under the influence of return springs 10 or guide ring 14. As back plate 3 is attached to piston 8 by means of bolt 9 movement of the gimbal ring will cause the positive disengagement of the driver and driven hubs and shafts. 3.

Claims (6)

  1. Claims: 1. The Rotary coupling removes the need for the engagement of the power wind gears by hand by engaging driver and driven components on first movement of the driver shaft or mechanism in either direction thus enabling automation of the process by remote electrical means.
  2. 2. The rotary coupling according to claim 1 achieves coupling by at least one pre-loaded spring forcing at least one piston or pin forward into engagement with a driven hub or shaft.
  3. 3. The pre-loading of the spring(s) of the Rotary coupling can be alternatively achieved by actuating a mechanical lever or hand winding of the lead screw.
  4. 4. The disengagement of the piston(s) or pin(s) from the driven hub or shaft is achieved by positive attachment of the pistons to the back plate.
  5. 5. Disengagement of the piston(s) or pin(s) is achieved by the release of energy stored in the return springs compressed by the action of the gimbal ring and back plate in the engagement mode or mechanical force on the guide ring.
  6. 6. The rotary coupling according to claim 1 enables the coupling of any driver and driven shaft.Amendments to the claims have been made as follows: Claims: 1. The Rotary coupling (figures 1,2&3) removes the need for the engagement of the power wind gears by hand by engaging driver and driven components on first movement of the driver shaft or mechanism in either direction thus enabling automation of the process by remote electrical means. The pre-loading of the spring(s) 7 of the Rotary coupling is achieved by the rotation of the lead screw 11 which nioves the gimbal ring 13, the back plate 6 and the back plate 4. The pre-loading of the spring(s) 7 of the Rotary coupling can be achieved alternatively by actuating a mechanical lever or hand winding of the lead screw ii.The rotary coupling achieves coupling by at least one pre-loaded spring 7 forcing at least one piston or pin 8 forward into engagement with a driven hub or shaft 1. If there is more than pne piston or pin they are arranged in the same diametric and angular pitch that they all engage simultaneously. - 2. Disengagement of the piston(s) or pin(s) 8 according to ëlaim 1 is achieved by mechanical movement of the gimbal ring 14 the release of energy stored in the return springs 10 : compressed by the action of thegimbal ring 13 and back plate 4 in the engagement mode and or mechanical force on the guide-ring 14.3. According to claim 2 there is no mechanical attachment between driver and driven sections * of the coupling and therefore absorb no energy when not engaged.4. Aécording to claims 1 & 2 the engagement or disengagement of the piston(s) or pin(s) from the driven hub or shaft is achieved by mechanical attachment of the pistons by bolt(s)-9 to the back plate 4 thus ensuring positive disengagement.S. The rotary coupling according to claim 2 enables continuous rotation of the driver shaft independent of the driven shaft 6. The rotary coupling according to claim 1 enables the coupling of any driver and driven shaft.7. -If the number of pistons or pins 8 is increased or the diameter thereof or the radial -diameter of that number according to claim 1 then the load on the driver shaft can be increased accordingly. -.
GB201213561A 2012-07-31 2012-07-31 Rotary coupling Expired - Fee Related GB2504498B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB201213561A GB2504498B (en) 2012-07-31 2012-07-31 Rotary coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201213561A GB2504498B (en) 2012-07-31 2012-07-31 Rotary coupling

Publications (3)

Publication Number Publication Date
GB201213561D0 GB201213561D0 (en) 2012-09-12
GB2504498A true GB2504498A (en) 2014-02-05
GB2504498B GB2504498B (en) 2014-06-18

Family

ID=46881400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201213561A Expired - Fee Related GB2504498B (en) 2012-07-31 2012-07-31 Rotary coupling

Country Status (1)

Country Link
GB (1) GB2504498B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2055681A1 (en) * 1970-11-12 1972-05-18 Ece Gmbh Electromagnetic clutch
GB2175359A (en) * 1984-12-24 1986-11-26 Sundstrand Corp Torque coupling

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2055681A1 (en) * 1970-11-12 1972-05-18 Ece Gmbh Electromagnetic clutch
GB2175359A (en) * 1984-12-24 1986-11-26 Sundstrand Corp Torque coupling

Also Published As

Publication number Publication date
GB2504498B (en) 2014-06-18
GB201213561D0 (en) 2012-09-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20160731