Winches

Winches are mechanical devices used to wind in or let out a strap or cable (most of our customers use straps) for securing cargo on flatbeds. They are typically mounted on the sides or the undercarriage of flatbed trailers and are an integral part of the tie-down system.

Types of Winches:

1. Side Mount Winches:

   • Mounted on the side rails of the flatbed.
   • Convenient for easy access and operation.

2. Bottom Mount Winches:

   • Installed underneath the flatbed.
   • Provides a lower profile, keeping the winch out of the way.

3. Sliding Winches:

   • Mounted on a track, allowing them to slide along the length of the trailer for adjustable positioning.

4. Weld-On Winches:

   • Permanently welded to the trailer.
   • Offer robust and durable securement.

5. Bolt-On Winches:

   • Bolted to the trailer, allowing for removal or repositioning as needed.

Operation:

• Manual Winches: Operated by turning a handle to wind the strap. Many binder bars have one pointed end to fit into a winch and facilitate greater leverage for easier winding.

Straps

Straps, often referred to as winch straps or tie-down straps, are used in conjunction with winches to secure cargo on flatbeds. They are typically made of high-strength polyester webbing.

Components:

1. Webbing:
   • Material: Polyester, known for its strength, durability, and low stretch.
   • Width: Commonly 2 inches, 3 inches, or 4 inches.
   • Length: Varies, typically between 20 feet and 40 feet.
2. End Fittings:
   • Flat Hooks: Designed to hook onto the flatbed’s side rails or anchor points.
   • Wire Hooks: Provide versatile attachment options.
   • Chain Anchors: Heavy-duty chains attached to the end of the strap for added strength and durability.

Features:

• Working Load Limit (WLL): Indicates the maximum safe load the strap can handle. Usually marked on the strap.
• Breaking Strength: The maximum load the strap can withstand before breaking, typically three times the WLL. This safety buffer exists for your safety only and should not be factored into your tie down system. NEVER exceed the WLL!

Usage:

1. Threading the Strap:

   • Insert the strap into the winch’s slot and pull through any slack.

2. Tightening:

   • Use the winch to wind the strap, pulling it tight and securing the load.
   • For manual winches, turn the handle until the strap is tight. For powered winches, use the control to wind the strap.

3. Securing:

   • Ensure the strap is evenly distributed over the cargo and that it does not have any twists.
   • Verify that the end fitting is securely attached to the anchor point.

Applications

• Freight Transport: Securing a wide range of cargo, including machinery, lumber, and large equipment.
• Construction: Transporting construction materials and equipment.
• Agriculture: Securing agricultural machinery and produce during transport.

Safety Considerations

• Inspection: Regularly inspect straps for fraying, cuts, and damage, and check winches for proper operation.
• Load Limits: Always use straps and winches with a WLL appropriate for the load being secured.
• Even Distribution: Ensure straps are evenly distributed over the cargo to prevent shifting.
• Proper Storage: Store straps in a dry, cool place away from direct sunlight to prolong their lifespan.

Winches and straps provide a reliable and efficient means of securing cargo on flatbed trailers, ensuring that loads remain stable and safe during transport.