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Rail Transfer Bridges

Why Use Rail Transfer Bridges

Rail-Transfer-Bridges The primary use of rail transfer bridges is to span from floor to floor or dock to dock over railroad tracks. The platforms are left in the horizontal position most of the time and then elevated to the vertical position when trains need to pass on the railroad spur. In the most common application there is a single bridge recessed in the face of one floor or dock and when the bridge is lowered, the traveling end of the platform rests in a recess on the opposing dock. Sometimes due to overhead clearance problems or very long spans, two bridges are positioned end to end, each hinged on opposing docks so that their traveling ends meet in the middle of the span. In these instances, the traveling ends of the bridges are either supported by a concrete pier or each bridge leaf is equipped with automatic folding legs.

Note that if a unit is specified that is wide enough for two way traffic, then the bridge capacity specified must exceed the combined weight of the passing traffic and the axle capacity rating must exceed the combined maximum axle weight of the two (2) passing vehicles. Sometimes it is more economical to install two (2) narrower units; each limited to one way traffic.

ARCHITECTURAL SPECIFICATIONS FOR RAIL TRANSFER BRIDGES

SCOPE: This specification covers Advance Lifts, Inc. Rail Transfer Bridge model number “ A ”.

Platform: The bridge deck shall be “ B ” wide x “ D ” minus 2-1/2″ long. The clear span between docks is “ C ”. (Actual platform length is clear span plus 24″ for the ram cutout, plus 6″ for lip cutout, less 1″ clearance at the lip end and 1-1/2″ at the ram end.) The bridge shall have a safety tread steel deck and be fabricated from structural steel shapes and forms, which are rigidly welded and reinforced for maximum stability and minimum deflection.

Capacity: The bridge shall have a loading capacity of “ E ” with an axle capacity of “ F ” at a traffic speed of 3 mph.

Travel: The bridge travel shall be a full 90º arc so that none of the bridge mechanism projects beyond the dock when fully raised.

Rams: The bridge shall be equipped with “ G ” heavy duty double acting hydraulic rams which have chrome plated rods to inhibit rusting. The rams shall also be equipped with steel internal cylinder stops and ceramic wear rings for long life and velocity fuses.

Eletrical Control: The bridge shall be equipped with two (2) NEMA 1 “deadman” style wall mounted pushbutton control stations (one for each dock) and a UL approved controller assembly consisting of a NEMA 12 control box, magnetic motor starter and a 24 V. control transformer with fused secondary and primary.

Power Unit: The electrical power unit shall be self-contained with all components built onto a single oil reservoir. It shall consist of a continuous duty 5HP 230/460V-60HZ-3PH motor, high pressure pump, counter balance valve, oil filters and mild steel reservoir. The overall dimensions shall be approximately 22″ x 20″ x 21″ H.

Speed: The bridge shall raise in “ I ” seconds.

Work to be performed by owner: All electrical work, excavation, concrete work, building modifications, pit angle framing, underground piping and embedded items.

Work to be performed by Installer: Furnish the hydraulic oil and install the bridge complete less the above exceptions.

Specification Table for Rail Transfer Bridges

A Model No. 14-101 14-102 14-103 14-104 14-105 14-106 14-107 14-108 14-109 14-110 14-111 14-112 14-113
B Width 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′
C Clear Span at Docks 14′ 15′ 16′ 17′ 18′ 14′ 15′ 16′ 17′ 18′ 14′ 15′ 16′
D Overall span* 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′
E Capacity 10000 10000 10000 10000 10000 15000 15000 15000 15000 15000 20000 20000 20000
F Axle Capacity 8000 8000 8000 8000 8000 12000 12000 12000 12000 12000 16000 16000 16000
G Rams 1 1 2 2 2 1 1 2 2 2 2 2 2
H Weight 3800 4000 4500 4700 4900 4200 4400 4400 5000 5200 4800 5200 5500
A Model No. 14-114 14-115 14-116 14-117 14-118 14-119 14-120 14-121 14-122 14-123 14-124 14-125
B Width 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′ 6′
C Clear Span at Docks 17′ 18′ 14′ 15′ 16′ 17′ 18′ 14′ 15′ 16′ 17′ 18′
D Overall span* 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′
E Capacity 20000 20000 25000 25000 25000 25000 25000 30000 30000 30000 30000 30000
F Axle Capacity 16000 16000 20000 20000 20000 20000 20000 24000 24000 24000 24000 24000
G Rams 2 2 2 2 2 2 2 2 2 2 2 2
H Weight 5700 5900 5000 5300 5500 5800 6100 5200 5500 5800 6100 6400
A Model No. 14-201 14-202 14-203 14-204 14-205 14-206 14-207 14-208 14-209 14-210 14-211 14-212 14-213
B Width 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′
C Clear Span at Docks 14′ 15′ 16′ 17′ 18′ 14′ 15′ 16′ 17′ 18′ 14′ 15′ 16′
D Overall span* 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′
E Capacity 10000 10000 10000 10000 10000 15000 15000 15000 15000 15000 20000 20000 20000
F Axle Capacity 8000 8000 8000 8000 8000 12000 12000 12000 12000 12000 16000 16000 16000
G Rams 2 2 2 3 3 2 2 2 3 3 2 2 2
H Weight 4800 5000 5300 5700 6000 5200 5400 5700 6200 6500 5900 6100 6500
A Model No. 14-214 14-215 14-216 14-217 14-218 14-219 14-220 14-221 14-222 14-223 14-224 14-225
B Width 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′ 7′
C Clear Span at Docks 17′ 18′ 14′ 15′ 16′ 17′ 18′ 14′ 15′ 16′ 17′ 18′
D Overall span* 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′
E Capacity 2000 20000 25000 25000 25000 25000 25000 30000 30000 30000 30000 30000
F Axle Capacity 16000 16000 20000 20000 20000 20000 20000 24000 24000 24000 24000 24000
G Rams 3 3 2 2 2 3 3 2 2 2 3 3
H Weight 7000 7300 6200 6400 6800 7300 7600 6500 6700 7100 7600 7900
A Model No. 14-301 14-302 14-303 14-304 14-305 14-306 14-307 14-308 14-309 14-310 14-311 14-312 14-313
B Width 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′
C Clear Span at Docks 14′ 15′ 16′ 17′ 18′ 14′ 15′ 16′ 17′ 18′ 14′ 15′ 16′
D Overall span* 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′
E Capacity 10000 10000 10000 10000 10000 15000 15000 15000 15000 15000 20000 20000 20000
F Axle Capacity 8000 8000 8000 8000 8000 12000 12000 12000 12000 12000 16000 16000 16000
G Rams 2 2 2 3 3 2 2 2 3 3 2 2 2
H Weight 5100 5400 5700 6100 6400 5500 5800 6100 6600 6900 600 6500 6900
A Model No. 14-314 14-315 14-316 14-317 14-318 14-319 14-320 14-321 14-322 14-323 14-324 14-325
B Width 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′ 8′
C Clear Span at Docks 17′ 18′ 14′ 15′ 16′ 17′ 18′ 14′ 15′ 16′ 17′ 18′
D Overall span* 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′ 16-1/2′ 17-1/2′ 18-1/2′ 19-1/2′ 20-1/2′
E Capacity 20000 20000 25000 25000 25000 25000 25000 30000 30000 30000 30000 30000
F Axle Capacity 16000 16000 20000 20000 20000 20000 20000 24000 24000 24000 24000 24000
G Rams 3 3 2 2 2 3 3 2 2 2 3 3
H Weight 7400 7700 6500 6800 7200 7700 8000 6800 7100 7500 8000 8300

NOTE:

“I” Speed – 1 ram=60 sec., 2 rams=120 sec., 3 rams=180 sec.

* Actual platform length is “D” (overall span length) minus 2-1/2″.

Please note that we have made bridges up to 100,000 lb. capacity. If you do not see what you need, simply consult the factory

Rail Transfer Bridges Drawings

1-800-843-3625

701 S. Kirk Road • St. Charles, IL 60174 • Toll Free 1-800-843-3625 • Fax: 630-584-9405
© Copyright 2016 Advance Lifts, Inc.

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