GB2268722A - Hydraulic winch drive - Google Patents

Hydraulic winch drive Download PDF

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Publication number
GB2268722A
GB2268722A GB9213478A GB9213478A GB2268722A GB 2268722 A GB2268722 A GB 2268722A GB 9213478 A GB9213478 A GB 9213478A GB 9213478 A GB9213478 A GB 9213478A GB 2268722 A GB2268722 A GB 2268722A
Authority
GB
United Kingdom
Prior art keywords
barrel
motor
winch
hydraulic winch
primary
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
GB9213478A
Other versions
GB9213478D0 (en
GB2268722B (en
Inventor
Robert Mccallum
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.)
Anderson Group PLC
Original Assignee
Anderson Group PLC
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 Anderson Group PLC filed Critical Anderson Group PLC
Priority to GB9213478A priority Critical patent/GB2268722B/en
Publication of GB9213478D0 publication Critical patent/GB9213478D0/en
Publication of GB2268722A publication Critical patent/GB2268722A/en
Application granted granted Critical
Publication of GB2268722B publication Critical patent/GB2268722B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B66D1/08—Driving gear incorporating fluid motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

A hydraulic winch 1 comprises a winch barrel 2 connected through drive pins 8 to a primary motor 5 at one end of the barrel and a secondary motor 6 at the other end of the barrel, whereby upon seizure of the primary motor the drive pins connecting the barrel to the primary motor may be removed and drive applied to the secondary motor which rotates the barrel. Spring applied brakes 9 are preferably provided between each motor and the winch barrel 2. <IMAGE>

Description

A WINCH This invention relates to a winch and, more particularly, to a hydraulic winch for a launching davit.
Winches are used on launching davits to raise and lower machinery from one position to another, for example over the side of a ship. If a problem develops with the winch during operation, damage to machinery may occur and workers may be injured by falling machinery. Furthermore, the downtime required to access the position and resolve the problem may be costly.
It is an object of the present invention to provide a hydraulic winch which overcomes or at least mitigates the problems and disadvantages discussed above.
According to the present invention there is provided a hydraulic winch having a winch barrel connected through drive pins to a primary motor at one end of the barrel and a secondary motor at the other end of the barrel, whereby upon seizure of the primary motor the drive pins connecting the barrel to the primary motor are removed and drive is applied to the secondary motor which rotates the barrel.
Advantageously, brake means are provided between the winch barrel and each motor.
Preferably, the brake means comprise an internally fitted spring operated brake.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawings in which: Figure 1 shows a cross-section of a hydraulic winch according to one aspect of the present invention, and Figure 2 shows a side elevation of a brake means attached to the hydraulic winch of Figure 1.
Referring to the drawings there is shown a hydraulic winch 1 having a rotatable winch barrel 2. Each end of the winch barrel 2 is provided with a flange 3. The flanges 2 correspond with similar flanges 4 on each of two driving hubs 5, which are connected to two driving motors 6 and 7. One of the motors is considered to be the primary motor and the other is considered to be the secondary motor.
The flanges 3 of the barrel 2 and the corresponding flanges 4 of the driving hubs 5 are provided with a plurality of apertures (not shown) therethrough which receive drive pins 8 to connect the barrel 2 to the motors 6,7. The drive pins 8 which connect the motors 6,7 to the barrel 2 are removable.
Each of the primary and secondary motors 6,7 is provided with an internally fitted brake means 9 such as a spring operated brake.
Bearings 10, 11, and 12 are provided between the barrel 2 and the flanged hubs 5 of the primary motor 6 and secondary motor 7 and between the flanged hubs 5 and the boss 13 of each motor mounting bracket 14.
Figure 2 shows a side elevation of the brake means 9 which comprises a hydraulic ram 15 which is attached to a lever 16 extending from the brake means 9.
The operation of the winch 1 will now be described. When the primary motor 6 is energised, the secondary motor 7 is set to freewheel. The barrel 2 rotates on the bearings 10, 12 between the flanged hubs 5 and the boss 13 of the motor mounting brackets 14. This is the normal working condition of the winch 1.
In the event that a mechanical fault develops in the primary motor 6, preventing the primary motor from rotating, the drive pins 8 connecting this motor to the barrel 2 are removed and the secondary motor 7 is energised. The barrel 2 now rotates on the bearing 11 between the barrel 2 and the flanged hub 4 of the primary motor 6. The bearing 10 located between the flanged hub 4 and the boss 13 of the primary motor mounting bracket 14 supports the flanged hub 4 against misalignment due to collapse of the motor bearing.
The brake means 9 attached to each of the primary and secondary motors sustains the winch barrel 2 against rotation when either of the motors 6, 7 is de-energised.
It can be understood that the present invention provides a reliable standby function which can be quickly and efficiently brought into action thereby reducing downtime of the winch and, furthermore, reducing the possibility of accidents to workmen and damage to machinery from occurring.

Claims (4)

1. a hydraulic winch eempriging a winch barrel connected through drive pins to a primary motor at one end of the barrel and a secondary motor at the other end of the barrel, whereby upon seizure of the primary motor the drive pins connecting the barrel to the primary motor are removed and drive is applied to the secondary motor which rotates the barrel.
2. A hydraulic winch according to claim 1, wherein brake means are provided between the winch barrel and each motor.
3. A hydraulic winch according to claim 2, wherein the brake means comprise an internally fitted spring operated brake.
4. A hydraulic winch substantially as hereinbefore described with reference to and as shown in Figures 1 and 2 of the drawings.
GB9213478A 1992-06-25 1992-06-25 A winch Expired - Fee Related GB2268722B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9213478A GB2268722B (en) 1992-06-25 1992-06-25 A winch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9213478A GB2268722B (en) 1992-06-25 1992-06-25 A winch

Publications (3)

Publication Number Publication Date
GB9213478D0 GB9213478D0 (en) 1992-08-12
GB2268722A true GB2268722A (en) 1994-01-19
GB2268722B GB2268722B (en) 1995-08-09

Family

ID=10717710

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9213478A Expired - Fee Related GB2268722B (en) 1992-06-25 1992-06-25 A winch

Country Status (1)

Country Link
GB (1) GB2268722B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106064795A (en) * 2016-07-12 2016-11-02 宝鸡石油机械有限责任公司 Many gears two hydraulic motors directly drives well drilling hoist

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108313904B (en) * 2018-04-16 2024-05-28 宁波新宏液压有限公司 Double-end hydraulic winch under water

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247445A (en) * 1990-08-30 1992-03-04 Camco Int Hydraulically driven wireline winch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247445A (en) * 1990-08-30 1992-03-04 Camco Int Hydraulically driven wireline winch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106064795A (en) * 2016-07-12 2016-11-02 宝鸡石油机械有限责任公司 Many gears two hydraulic motors directly drives well drilling hoist
CN106064795B (en) * 2016-07-12 2018-02-27 宝鸡石油机械有限责任公司 More gear two hydraulic motors directly drive well drilling hoist

Also Published As

Publication number Publication date
GB9213478D0 (en) 1992-08-12
GB2268722B (en) 1995-08-09

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Legal Events

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

Effective date: 19960625