US3812790A - Dynamic stop - Google Patents
Dynamic stop Download PDFInfo
- Publication number
- US3812790A US3812790A US00309373A US30937372A US3812790A US 3812790 A US3812790 A US 3812790A US 00309373 A US00309373 A US 00309373A US 30937372 A US30937372 A US 30937372A US 3812790 A US3812790 A US 3812790A
- Authority
- US
- United States
- Prior art keywords
- cars
- recoil
- bracket
- tracks
- travel
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
Definitions
- ABSTRACT A dynamic stop for an operator-less, remotely controlled unit carrier system consisting of a pair of stopping bars positioned between the tracks of the carrier system and mounted so that they do not interfere with the passage of the cars of the unit carrier system when not in use, but may be extended into an outward position so that they will contact stopping brackets on the underside of a car which it is desired to stop.
- the dynamic stop may be mounted on a reciprocating device to absorb the energy of contact.
- the invention relates generally to the selective stopping of cars in an operatorless, railway type transpon tation system and, more specifically, to the stopping of operator-less, remotely controlled cars in a transportation system such as is disclosed in commonly assigned US. Pat. Nos. 3,621,790, 3,626,859, and 3,650,216.
- the cars of an operator-less unit carrier system may be rapidly and selectively stopped by means of a pair of stopping bars positioned between the tracks of the carrier system and mounted so that they do not interfere with the passage of the cars of the unit carrier system when not in use, but may be extended into an outward position so that they will contact stopping brackets on the underside of a car which it is desired to stop.
- the stop may be mounted on a reciprocating device, the actuation of which on contact with the car absorbs the energy of the contact.
- FIG. 3 is a front view of the dynamic stop shown in 7 FIG. 1.
- two stopping bars 10 are slidably mounted in guides 11 and 12.
- the inside ends of the stopping bars 10 are pivotably connected to link bars 13, which are in turn pivotably connected to double clevis 14.
- the double clevis 14 is fixedly connected to a double-action air cylinder 15, and the air cylinder 15 and the guides 11 and 12 are all mounted on recoil bracket 16.
- This configuration permits the stopping bars 10 to be extended by the operation of the cylinder 15 into the path of stopping brackets (not shown) mounted on the underside of the cars (not shown) of the unit carrier system.
- the stopping brackets can be of any appropriate design, the only requirement being that they be a part of or solidly connected to the cars in a position to be contacted by the stopping bars 10 when in their extended position.
- the recoil bracket 16 is mounted on the front of a reciprocating denoted generally by the number 17 assembly, (see FIG. 2).
- This reciprocating 17 consists essentially of a centrally positioned shock absorber 18, a pair of spaced compression springs 19, connecting and bracing elements (including, of course, the recoil bracket 16), and guides to control the path of the reciprocation.
- One suitable mechanism for controlling the path of reciprocation are the cam followers 20 and 21, which limit, respectively, the lateral and vertical movement of the reciprocating device, and the sliding element 22, which may be attached either to the stationary frame 23 or the recoil bracket 16.
- the cam follower 20 is mounted directly on the recoil bracket 16, and the cam follower 21 is mounted on an angle iron 24, which permits the cam follower 21 to engage the under surface of the frame 23.
- the stationary frame 23 and the may be atttached directly to ground, or, as shown, it may be attached to the rails 25, which are in .turn attached to ground in a manner not shown.
- This configuration permits the shock absorber 18 to absorb the energy of contact, while the compression springs 19 (and, if the shock absorber is, as shown, a resilient device, its internal return mechanism) are present to return the reciprocating device (and, via the stopping arms 10, the stopped car) to its position at initial contact with the car.
- the compression springs 19 and, if present, the internal return mechanism in the shock absorber must be strong enough to move the weight of the reciprocating device 17, the stopping bars 10 and their ancillary elements, and the car, as well as to simultaneously overcome the forward motivating force of the stopped car, as will be explained in the next paragraph.
- the operation of the air cylinder 15 may be controlled by any appropriate means for example, the mechanism disclosed in commonly assigned US. Pat. No. 3,626,859.
- Such control permits the selective stopping of the cars of the unit carrier system and moreover, permits the precise positioning of the stopped cars, which may be held in place against the stopping bars 10 after they have been brought to a halt by maintaining the forward motivating force of the cars at a very low level while they are stopped.
- This ability to precisely position the stopped cars is very important in minimizing the merging space needed between the cars on a main line when the present invention is used in a queingsystem such as is disclosed in commonly assigned U.S. Pat. No. 3,626,859.
- a recoil bracket slidably mounted on said stationary frame in a manner permitting said recoil bracket to move in the direction of and counter to the direction of travel of said cars on said tracks when said stationary frame is mounted adjacent to said tracks;
- a shock absorber mounted on said stationary frame in a manner permitting said shock absorber to oppose the motion of said recoil bracket in the direction of travel of said cars on said tracks;
- a dynamic stop as recited in claim 1 wherein said means for biasing said recoil bracket comprise a compression spring operatively disposed between said stationary frame and said recoil bracket.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00309373A US3812790A (en) | 1972-11-24 | 1972-11-24 | Dynamic stop |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00309373A US3812790A (en) | 1972-11-24 | 1972-11-24 | Dynamic stop |
Publications (1)
Publication Number | Publication Date |
---|---|
US3812790A true US3812790A (en) | 1974-05-28 |
Family
ID=23197957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00309373A Expired - Lifetime US3812790A (en) | 1972-11-24 | 1972-11-24 | Dynamic stop |
Country Status (1)
Country | Link |
---|---|
US (1) | US3812790A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180079623A1 (en) * | 2015-03-03 | 2018-03-22 | Thyssenkrupp Elevator Ag | Brake device for a car of an elevator system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US235135A (en) * | 1880-12-07 | Safety railway-car | ||
DE560387C (en) * | 1929-02-01 | 1932-10-01 | Anni Schilling | Device for holding the conveyor carriage on the conveyor basket |
US2863397A (en) * | 1953-05-20 | 1958-12-09 | Roy O Billings | Apparatus for handling automobiles |
US3306233A (en) * | 1964-02-24 | 1967-02-28 | Whiting Corp | Railway car holder assembly |
US3398276A (en) * | 1964-05-28 | 1968-08-20 | Dine Rene Edouard | Marshalling yard apparatus |
-
1972
- 1972-11-24 US US00309373A patent/US3812790A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US235135A (en) * | 1880-12-07 | Safety railway-car | ||
DE560387C (en) * | 1929-02-01 | 1932-10-01 | Anni Schilling | Device for holding the conveyor carriage on the conveyor basket |
US2863397A (en) * | 1953-05-20 | 1958-12-09 | Roy O Billings | Apparatus for handling automobiles |
US3306233A (en) * | 1964-02-24 | 1967-02-28 | Whiting Corp | Railway car holder assembly |
US3398276A (en) * | 1964-05-28 | 1968-08-20 | Dine Rene Edouard | Marshalling yard apparatus |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180079623A1 (en) * | 2015-03-03 | 2018-03-22 | Thyssenkrupp Elevator Ag | Brake device for a car of an elevator system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: WILMINGTON TRUST COMPANY, RODNEY SQUARE NORTH, WIL Free format text: SECURITY INTEREST;ASSIGNOR:REXNORD INC.;REEL/FRAME:004817/0047 Effective date: 19870430 Owner name: WADE, WILLIAM J., RODNEY SQUARE NORTH, WILMINGTON Free format text: SECURITY INTEREST;ASSIGNOR:REXNORD INC.;REEL/FRAME:004817/0047 Effective date: 19870430 |
|
AS | Assignment |
Owner name: REXNORD HOLDINGS INC., 350 N. SUNNY SLOPE, BROOKFI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:REXNORD INC., A CORP. OF WI;REEL/FRAME:004938/0476 Effective date: 19880808 |
|
AS | Assignment |
Owner name: WILMINGTON TRUST COMPANY AND WADE WILLIAM J. AS TR Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. AMENDED SECURITY AGREEMENT;ASSIGNOR:REXNORD HOLDINGS INC., A CORP. OF DE;REEL/FRAME:004945/0853 Effective date: 19880816 Owner name: WILMINGTON TRUST COMPANY AND WADE WILLIAM J. AS TR Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:REXNORD HOLDINGS INC., A CORP. OF DE;REEL/FRAME:004945/0853 Effective date: 19880816 |
|
AS | Assignment |
Owner name: CITICORP NORTH AMERICA, INC., ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WILMINGTON TRUST COMPANY;WADE, WILLIAM J.;REEL/FRAME:007677/0077 Effective date: 19950222 |