Common mechanical safety hazards and preventive measures in industrial production

Safety production hazards refer to the dangerous factors that may lead to accidents in the daily safety production activities of enterprises, such as unsafe human behavior, dangerous state of objects, management defects, and so on.

If these hidden dangers are not discovered and eliminated in a timely manner, they can easily lead to major safety accidents and cause serious damage to personnel and property.

The two major factors of safety hazards

Heinrich once proposed the theory of causal chain of accidents, which emphasizes that casualty accidents do not occur in isolation, but rather in a chain reaction triggered by a series of factors interacting with each other. Among them, 'unsafe human behavior' and 'unsafe state of objects' are the core elements of the entire chain reaction and the direct triggers that lead to accidents.

Human induced hazards

Unsafe human behavior is a key trigger for accidents. Human behavior is highly susceptible to interference from various complex factors such as psychology and physiology.

For example, inadequate awareness of the hidden dangers behind equipment operation by staff, lack of standardization in executing operating procedures, weak self-protection and safety awareness, and a lack of proper response capabilities in the face of unexpected events are intertwined with various dangerous behaviors, which can easily lead to serious safety accidents and bring irreversible consequences to individuals and enterprises.

Equipment hazards

The operational status of equipment is directly related to production safety and is the foundation of safety management. The unsafe state of equipment refers to the hazards caused by defects or malfunctions during the production process, which may directly trigger safety accidents and lead to the failure of safety functions in the production system.

The safety hazards of equipment are multifaceted, including objective issues in design, manufacturing, operation, and subjective factors related to human operation.

Common safety hazards in mechanical equipment

In modern industrial production, the safe operation of mechanical equipment is crucial. However, due to equipment failure, aging, improper operation, or lack of effective safety monitoring systems, mechanical equipment often poses various safety hazards.

（1） Risk of moving parts

1. Squeezing/shearing

The transmission components (gears, pulleys, chains) and linear moving parts (sliders, fixtures) of the equipment pose a risk of compression/shearing during operation. Accidental contact with the human body may cause limb injuries, such as typical accidents where the operator's fingers are caught in the gear meshing area, resulting in pinching injuries, fractures, or even amputations.

2. Risk of entanglement/entanglement

In industrial production, if operators do not strictly comply with safety regulations, their long hair, loose clothing, gloves, ties, tool hanging ropes, and other mechanical components that rotate at high speeds (such as drive shafts, impellers, pulleys, gears, drill bits, or drums) are easily caught or entangled, causing serious compression, tearing, or twisting injuries.

(2) Loose and detached components

1. Loose connecting components

The connecting components such as bolts, nuts, keys, etc. of mechanical equipment may become loose under long-term vibration, impact, and other effects. Loose connecting components can cause unstable equipment operation, abnormal noise and vibration, and in severe cases, even lead to equipment failure or safety accidents.

2. Component detachment

Parts that are severely worn, aged, or poorly installed may suddenly detach during equipment operation, and high-speed flying parts can cause serious harm to surrounding personnel and equipment.

（3） Hidden dangers related to protective devices

1. Lack of protective devices

Old or small equipment may not be equipped with necessary protective devices such as shields, safety sensors/controllers, protective fences, etc., which directly expose personnel to hazardous environments while operating or running the equipment.

2. Unauthorized removal of protective devices

In order to facilitate operation or save costs, some personnel may dismantle the protective devices on the equipment without authorization, which undoubtedly increases the possibility of accidents.

3. Damage or aging of protective devices

After long-term use, protective devices may experience aging, deformation, wear and tear. If not maintained in a timely manner, the protective performance of the equipment will be greatly reduced, and it will not be able to effectively protect operators from mechanical injuries.

4. Improper installation of protective devices

Incorrect installation position and unstable fixation of protective devices may result in mismatched operation between the protective devices and equipment, not only losing their intended protective function, but also potentially becoming a new source of danger.

More seriously, if the installation of protective devices is not standardized, enterprises may be judged as violating safety regulations during inspections and face administrative penalties such as high fines and suspension of production for rectification, which will have a dual impact on the reputation and economic interests of the enterprise.

Preventive measures for safety hazards of mechanical equipment

The safety hazards of mechanical equipment are one of the main causes of accidents, which may result in serious consequences such as casualties, equipment damage, and production stagnation. In order to effectively prevent these risks, enterprises must take comprehensive security measures, from risk identification, equipment monitoring to emergency response, and build a multi-level security protection system.

By introducing advanced safety controllers and sensors such as safety relays, non-contact safety switches, safety interlock switches, etc., the real-time monitoring of equipment operation status can effectively prevent safety hazards caused by human violations and equipment failures, and achieve safe production.

(1) Safety Relay Monitoring System

Safety relays play a crucial protective role in mechanical equipment and are indispensable safety components in industrial production.

Bytorent safety relays can be used to monitor various safety components, such as emergency stop switches, interlock switches, safety light curtains, etc., to monitor equipment status in real time and provide feedback on abnormalities, effectively reducing mechanical safety hazards and protecting equipment and personnel safety.

Product Highlights:

• The highest compliance with the PLe standard of ISO13849-1 and the SiL3 standard of IEC 62061
  
• Provide multiple status monitoring signals for safe output, which can be used for PLC or external indication output
  
• Redundant power terminals for easy expansion of 24V DC connections, increasing efficiency by 33%
  
• Accurate control, able to adapt to different safety functions through functional dip switches
  
• Three modes are available: dual channel, single channel dual channel, and single channel single channel
  
• Automatic/manual reset lever, can be quickly configured
  

(2) Safety interlock device

Safety interlocking device is an indispensable safety technical means in industrial production. It achieves linkage between equipment and protective devices through mechanical, electrical, or electronic means, ensuring timely response in case of danger, thereby effectively protecting the safety of personnel and equipment.

Bytorent's safety interlock switch (Bodyguard series) has high flame retardant rating and CE certification, suitable for monitoring safety doors and windows, forming a highly reliable safety control system.

Product Highlights：

• Mechanical interlocking: using 304 stainless steel components and forced mechanical contacts to ensure the reliability of interlocking.
  
• Four way rotation: multi angle installation, adaptable to multiple installation positions, improving installation flexibility.
  
• High brightness indicator light: The display status is clear at a glance, with a long-lasting lifespan, ensuring that operators can timely understand the equipment status.
  
• High stability: shockproof elastic quick connect terminal, improving wiring efficiency by 50%.
  
• Widely applicable: Suitable for industries such as automated production lines, robot production lines, hazardous testing areas, and isolation sites.
  

(3) Safety light curtain

A safety light curtain is a photoelectric safety device based on infrared sensing technology, used to detect and prevent human or object entry into hazardous areas. Its working principle is based on infrared sensors, which emit infrared beams and receive reflected or transmitted beams to form an invisible barrier, thereby achieving protection for people or equipment.

Bytorent safety light curtains are widely used in industrial automation, mechanical processing, logistics, medical equipment and other fields, providing efficient safety protection for equipment or personnel. For example, on industrial production lines, prevent workers from coming into contact with running mechanical components; In the field of warehousing and logistics, prevent personnel from entering hazardous areas; Ensure the safety of human-machine interaction in robot applications.

Product Highlights:

• High standard: equipped with CE safety level 2/4 certification, the controller provides dual signal PNP output
  
• Ultra long distance: The maximum shooting distance can reach 80m, with complete self checking function
  
• High strength performance: strong resistance to electromagnetic interference, light interference, vibration, and impact/collision
  
• Efficient protection: protection height of 150mm-1800mm, with excellent optical performance and high resolution
  

(4) Security fence

A safety fence is a safety protection device used to isolate specific areas and prevent personnel or objects from entering hazardous areas. Its main function is to ensure the safety of personnel and equipment through physical isolation and warning.

Bytorent safety fences are widely used in industrial automation production, mechanical processing, robot production lines, hazardous testing areas, and other scenarios to isolate hazardous areas and prevent unauthorized personnel from entering, thereby reducing safety risks.

Product Highlights:

• High impact strength: Complies with ISO14120 safety fence standards and has an impact strength of 1600J.
  
• Anti corrosion design: Adopting full body spraying technology to ensure that the fence has good corrosion resistance in harsh environments.
  
• Modular structure: Fully modular design simplifies the installation process, supports customization, and can meet the needs of different scenarios.
  
• Durable and sturdy: The overall structure has been reinforced and designed to meet international safety standards, ensuring the high strength and stability of the fence.
  

The safety hazards of mechanical equipment should not be underestimated. Only by adopting advanced safety monitoring systems and protective devices can we effectively reduce the potential risks of mechanical equipment, create a safe working environment, and ensure the safety of equipment and personnel.

The Bytorent series products provide comprehensive solutions for industrial safety with their high reliability, adaptability, and safety. Choose Bytorent to make your production safer and more efficient.