What Is a Hammer Lock?
A hammer lock is a specialized stopper device designed for carts that do not come equipped with a standard stopper. It’s an alternative to traditional caster stoppers and is often customized for specific cart models. The hammer lock mechanism can be engaged or disengaged by stepping on a lever with the foot.
Installing a hammer lock typically requires modifications to the cart’s main body, hence they are considered custom-ordered products. Different types of hammer locks are available to suit various load conditions, and their installation enhances the functionality of caster stoppers. For added durability and rust resistance, hammer locks are also available in stainless steel.
Uses of Hammer Locks
Hammer locks are particularly useful for carts and carriers lacking built-in stoppers. By attaching these external locks, they effectively function as stoppers, enabling the user to secure the cart in place. The lock is usually located near the cart’s wheels and is foot-operated.
Given the daily use of dollies and carts at work sites, the absence of a stopper can pose safety risks, especially if a loaded cart begins to move unexpectedly. Therefore, hammer locks serve as crucial safety features for carts without inherent stopper mechanisms.
Principle of Hammer Locks
The locking mechanism of hammer locks operates by lifting the wheels slightly off the ground and gripping the cart to the floor, thereby immobilizing it. Proper installation requires aligning the lock with the specified mounting height. Additionally, depending on the height of the casters, a pedestal might be needed for height adjustment under the cart bed.
When using carts with hammer locks, it’s important to consider floor level differences, as uneven surfaces may prevent the lock from functioning correctly. Therefore, selecting equipment suitable for the specific work environment is essential. It’s also important to note that hammer locks are not designed for lifting purposes and should not replace a jack. Furthermore, since they are often made of rubber, they should not be used with grounding clips or to secure work platforms or steps.