INTRODUCTION

The elevator area in the loading zone is one of the most problematic areas of a supermarket in terms of noise transmission. If it is not elastically disengaged correctly, the impact of the load is transmitted to the entire structure to which the elevator is attached and to the hydraulic systems as well. This can have a negative impact on the entire supermarket environment. Noise is a pollutant that can cause damage and undesirable effects of an auditory nature. A similar situation occurs with structural vibrations, which can cause damage, injury or discomfort-related effects due to whole-body vibration exposure. In recent years, it has been documented that musculoskeletal injuries, specifically lower and middle back pain, in the elevator operating area are closely related.

That is why AMC MECANOCAUCHO® sees the need to offer different solutions with vibration specialists for this type of application. A good solution is to use Sylomer to elastically decouple the supermarket elevator. Since these machines have different parts that are in contact with the surrounding structure, solutions for each of them are shown below.

SOLUTION FOR THE BASE

The best and simplest solution for the base plate of the elevator is its suspension on Sylomer.

To know the appropriate density, it is necessary to know the weight to be supported and the dimensions of the base plate.

In addition, it is crucial to avoid acoustic bridges. For this, one of the options is to place CB supports, secured with a central bolt, as shown in the images below.

GUIDE SOLUTION

On the other hand, another of the elements that can transmit vibrations can be the guides. To elastically decouple the guides, Sylomer can also be used. AMC MECANOCAUCHO® recommends not compressing the Sylomer more than 1 mm for these cases.

Regarding the execution at the time of isolating, there are different options. The two main options recommended by AMC MECANOCAUCHO® are:

OPTION 1

In this option, plates are used on both sides of the supporting wall for fixing the guide. Due to this, it is not necessary to use large metal sheets, since putting medium or small sized ones right where the fixing points are is enough. The only drawback is the need to have access to the opposite side of the wall in order to make the joint. In addition, the number of connection points is usually less in this type of configuration. In the following image you can see an example of how this assembly is carried out schematically.

In the images shown below you can see a real example of elastic fixing using this option.

WALL ON THE SIDE OF THE ELEVATOR

WALL ON THE OPPOSITE SIDE OF THE ELEVATOR

OPTION 2

In this second option, metallic plates are used only on one of the sides of the support wall when fixing the guide. Due to this, it is necessary to use large metal sheets, since the number of fixing points is greater, to prevent any risk of failure of any of the points anchored in the wall. Furthermore, in addition to the large sheet, it is necessary to use another layer of Sylomer and small metal plates to prevent acoustic bridges between the bolts and the wall.

In the image shown below you can see a real example of elastic fixing using this option.

PLATFORM OF THE ELEVATOR DOOR

Finally, it is necessary to elastically suspend the floor of the elevator door. To do this another layer of Sylomer is used underneath as shown in the images below.