Thursday, June 24, 2021-National Geith

For construction contractors, equipment dealers and manufacturers, safety should be the first responsibility. There is no room for negotiation to protect employees and customers. It must be the first priority in the decision-making process.

Every day, all over the world, buckets fall from machines, causing serious injuries and even deaths. As reported by OSHA, this is usually caused by the inadvertent detachment of the bucket from the quick coupling of the excavator. Geith believes that preventing these accidents is the responsibility of everyone in this industry.

According to his experience, it has been found that there are three main reasons why the bucket accidentally falls from the excavator when using a quick connector that does not comply with ISO 13031:

If a quick coupler without a front lock is used and a wrong connection occurs (the operator does not connect the bucket properly), the bucket may fall off the quick coupler at the beginning of the operation.

2. Cylinder failure/hydraulic loss

If a quick coupling that relies on hydraulic pressure to engage accessories is used, and the quick coupling loses hydraulic pressure due to leakage or cylinder failure, the coupling system will gradually open, causing the bucket to accidentally fall during operation. 3. Accidentally opening the quick connector in an unsafe location

Using a quick connector with a control system that allows the quick connector to be opened in any position or direction may cause the bucket to be unintentionally released to a dangerous position, causing the bucket to fall.

The establishment of safety standards related to quick connectors (such as ISO 13031 Earthmoving Machinery-Quick Connectors-Safety) has changed the rules of the game in the global construction industry.

It was developed in cooperation with global health and safety organizations, machinery and quick connector manufacturers, and aims to eliminate the increasing safety caused by several fatal accidents in which excavator buckets were separated from certain quick connectors during operation problem.

The standard outlines the minimum operating and safety requirements that quick couplings must meet in order to meet the requirements.

By using quick couplings that comply with the ISO13031 safety standard, this helps prevent the bucket from accidentally falling from the excavator under the above three conditions. how?

By using a quick connector with a front lock, if a wrong connection occurs, the bucket is fixed by the front lock to prevent it from falling.

2. Cylinder failure/hydraulic loss

By using a quick connector that adds an additional lock during the engagement process, the bucket can be kept in the default locked position even in the event of hydraulic loss or failure of the hydraulic cylinder through the internal safety spring.

3. Accidentally open the quick connector in an unsafe location

Release the control system by using a crimped quick connector (two-step operation control system). This only allows the attachment to be released to a safe position after obtaining a signal from the hydraulic system. This prevents the quick connector from opening in an unsafe position and prevents the bucket from falling.

Not all quick connectors are the same. No matter which type of quick coupling you use, ask yourself this question: Are your quick couplings safe and compliant?

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