US 3,964,692 AGranted

Winch spool with disc brake system

AssigneeMattco, Inc.

InventorEarl M. Pendleton

Life of this patent

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Abstract

A winch spool having disc brake system, such as a heavy duty winch that might be mounted on the deck or chassis of a drilling rig or may be employed to control the anchoring devices of a floating drilling platform, for example. The brake system for the winch spool may comprise a brake disc adapter fixed to at least one of the circular end flanges of the winch spool and may include a vertical generally circular support portion from which extends a transverse generally cylindrical portion having a disc support flange at the free extremity thereof. A circular brake disc may be secured to the adapter support flange in spaced relation with the flange of the winch spool and may be provided with opposed friction surfaces disposed in generally parallel relation with the flange of the spool. A brake caliper mechanism may be pivotally connected to the winch support and may be movable from an operative position, where brake block systems carried thereby are received about the brake disc, to an inoperative position, where the caliper mechanism is completely disengaged from the brake disc allowing access to the brake shoes for purposes of cleaning, repair or replacement. A control system is provided for actuation of the disc brake mechanism which utilizes an air pressurized hydraulic system that is also capable of locking the brake system to prevent rotation of the spool in the event the pneumatic pressure in the system is reduced below a predetermined minimum for any reason.

Claims18

Dependent claims

A winch spool and brake assembly comprising:

a winch spool having cable wound thereabout, said cable winding and unwinding relative to said spool upon rotation of said spool;
a pair of flanges one of which is disposed at each extremity of said spool for containing said cable as the cable is wound about the spool;
base means supporting said cable spool;
brake disc means extending from at least one of said flanges and having peripheral portion thereof disposed in spaced relation with said one of said flanges, said peripheral portion defining an inner brake surface spaced from and facing said one of said flanges and an outer brake surface facing away from said one of said flanges;
an elongated brake caliper means including a supporting arm means being of substantially the same thickness as the thickness of said brake disc, said supporting arm means having a connector portion at one extremity thereof, said connector portion being pivotally connected to said base means and supporting at least one pair of spaced brake shoe carrier blocks disposed one on each side of said arm means, so that when said supporting arm means is in an operative position, one of said brake shoe carrier blocks is disposed between one of said flanges and said brake discs and in juxtaposed relation with said inner brake surface and the other of said brake shoe carrier blocks is disposed outwardly of said brake disc in juxtaposed relation with said outer brake surface, said arm means being pivotable about the pivotal connection to said base means from an operative position, where said pair of spaced brake shoe carrier blocks receives the periphery of said brake disc therebetween, and an inoperative position, where said caliper means rests upon said base means with said brake disc carrier blocks positioned for removal and replacement of brake shoe means;
brake shoe means being carried by each of said brake shoe carrier blocks for respective braking engagement with said inner and outer brake surfaces;
hydraulic actuator means being carried by each of said brake shoe carrier blocks and, upon being energized, causing braking movement of said brake shoe means;
hydraulic means for controllably energizing said hydraulic actuator means and being connected to each of said brake shoe blocks and causing simultaneous actuation of said hydraulic actuator means and said brake shoe means;
and
releasable locking means supporting said arm means in a position relative to said brake disc that causes said caliper supporting arm means to be placed in tension by the force applied thereto during braking in one direction of the said spool's rotation.

7 more elements

A winch spool and brake assembly comprising:

a cable spool having cable wound thereabout, said cable winding and unwinding relative to said spool upon rotation of said spool;
a pair of flanges one of which is disposed at each extremity of said spool for containing said cable as the cable is wound about the spool;
base means rotatably supporting said cable spool;
brake disc means extending from at least one of said flanges and having a peripheral portion thereof disposed in spaced relation with said one of said flanges, said peripheral portion defining an inner brake surface spaced from and facing said one of said flanges and an outer brake surface facing away from said one of said flanges;
an elongated brake caliper means including a supporting arm means being of substantially the same thickness as the thickness of said brake disc, said supporting arm means having a connector portion at one extremity thereof, said connector portion being pivotally connected to said base means and supporting a plurality of pairs of spaced brake shoe carrier blocks, so that when said supporting arm means is in an operative position one of each pair of said brake shoe carrier blocks is disposed between one of said flanges and said brake disc and in juxtaposed relation with said inner brake surface and the other of each pair of said brake shoe carrier blocks is disposed outwardly of said brake disc in juxtaposed relation with said outer brake surface, said supporting arm means being pivotal about the pivotal connection to said base means from an operative position, where said pairs of spaced brake shoe carrier blocks receives the outer periphery of said brake disc therebetween, and an inoperative position where said brake shoe carrier blocks are retracted from said brake disc;
brake shoe means being carried by each of said brake shoe carrier blocks and being positioned for respective braking engagement with said inner and outer brake surfaces, said brake shoe means being exposed for repair or replacement upon movement of said arm means to said inoperative position;
hydraulic actuator means being carried by each of said brake blocks and, upon being energized, controllably forcing said brake shoe means against said inner and outer brake surfaces and controllably retarding rotation of said cable spool;
and
hydraulic means for controllably energizing said hydraulic actuator means and being connected to each of said hydraulic actuator means and causing simultaneous actuation of said brake shoe blocks and said brake shoe means.

6 more elements

A winch spool brake system comprising:

a base;
a spool for winding cable rotatably supported on said base;
a flange at each end of the spool;
a brake disc element having two annular braking surfaces, one surface being on each side of said brake disc element;
means for attaching said brake disc element to the peripheral portion of one of said flanges so that said brake disc element is parallel to and spaced from said flange, said attaching means being connected to said brake disc element so that said annular braking surfaces are exposed for engagement by braking elements;
a support frame for a caliper type brake carrier;
at least one pair of brake carrier blocks positioned on said support frame and spaced apart a sufficient distance to span the peripheral portion of said brake disc element;
braking elements mounted on each of said brake carrier blocks in a position adjacent the peripheral portion of said brake disc element when said blocks span the peripheral portion of said disc element;
means for pivotally connecting said support frame to said base with said support frame being so formed and said connecting means being so positioned that when said support frame is swung to an operative position, the peripheral portion of said brake disc element is received between the brake shoes of each pair of brake shoe carrier blocks and when the support frame is moved to an inoperative position, the support frame rests upon the base;
and
means for controlling engagement and disengagement of said brake shoes with said brake disc element.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/548,669Filed 10 Feb 1975 · continuation
Priority: 15 Sep 1971
Granted: 22 Jun 1976
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16D 55/228
By clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads: with a separate actuating…
B66D 5/14
With axial effect: embodying discs
B66D 5/26
Operating devices: pneumatic or hydraulic
B65H 2403/7255
Brakes: disc brakes