Bytorent: How to achieve Intrinsic Safety through Security Protection (next)

In the first two installments, we learned that there are two main ways to achieve intrinsic security: security control and security protection.

The first two phases of achieving intrinsic security through security control have been explained, and this phase is mainly focused on the topic of "How to achieve intrinsic security through security protection".

As we all know, with the continuous development and application of robot technology more and more widely, the use of robots in industry, metal industry, electrical and electronic industry, logistics and warehousing industry is also increasing. However, while the use of robots has brought convenience, it has also brought some safety risks, and the production safety accidents caused by mechanical hazards account for a very high proportion of the total number of safety accidents every year.

Common mechanical hazards

Squeezing, bumping, entanglement, cutting or cutting, shearing, pulling in or falling in are all common mechanical hazards.

Danger often occurs in position

1. The bite between the rotating parts and the tangential moving parts. Such as power transmission belt and pulley, chain and sprocket, rack and gear.

2. Axis of rotation. Including connectors, mandrel, chuck, lead screw, etc.

3. Rotating convex block and hole. Rotating parts that contain bumps or voids are very dangerous, such as fan blades, cams, flywheels, etc.

4. The bite of the opposite rotating part. Such as gears, rolling machines, mixing rolls, etc.

5, the joint of rotating parts and fixed parts. Such as spoke hand wheel or flywheel and machine tool bed, unprotected open shell mixing device.

6, one-way slide. Such as band saw edge teeth, sand belt polishing machine, convex sports belt and so on.

Correct avoidance of mechanical hazards

Operator

1, must be professional training, certificate on the job;

2. Take good security measures. Wear protective glasses and dust masks if necessary;

3, when operating the drill machine, do not wear gloves, do not change clothes next to the starting mechanical equipment.

Operating process

1, before the mechanical operation, carry out safety checks to confirm that there is no one in the danger area, and it is strictly prohibited to run the machinery "with disease";

2. When the machine is running, personnel activities within the rotating range of the machine are prohibited to ensure compliance;

3. After the mechanical operation, confirm that the mechanical operation has stopped and clean up the remaining materials on the site.

-- Equipment maintenance or the cleaning of the contact equipment must strictly implement the power failure listing system, and the outage equipment without power failure listing is regarded as operating equipment.

Mechanical protection device requirements

1, the safety protection device should be simple in structure, reasonable layout, no sharp edges or flanges;

2, the safety protection device should consider its reliability, should have the corresponding rigidity, hardness, stability, corrosion resistance and other characteristics;

3, the safety protection device should be interlocked with the moving parts, the safety protection device does not work when the machinery can not operate, the protection device construction spacing should meet the relevant provisions;

4, photoelectric type, induction type safety device set fault self-alarm system;

5, easy to check and repair.

Common safety devices

1. Security fence

The safety fence is a protective device used to limit the movement range of the robot, which can be used to fix the robot and restrict personnel from entering the robot operation area to reduce the purpose of safety hazards. Security fences can be made of metal or plastic to increase strength and durability.

Guard Force safety fence, high standard in line with ISO14120 safety fence standard, with 1600J impact strength. At the same time, in order to maintain the durability of the product, the Guard Force security fence uses a full-body spray process to ensure that the fence has corrosion resistance. The full modular design is easier to install.

2. Safe side contact

The safety contact side is installed on moving parts such as doors and fences of mechanical equipment to prevent hazards posed by moving parts or to shut down the entire system when contact with a person or object is detected. The elastic material and absorptive properties of the safety contact side effectively slow the collision of a person or object.