Transcript guards-devices-presentation

Guards
Prevent Access
If Infeasible
Devices
Control Access
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Requirements of
Safeguards
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Prevent contact
Secure
Protect from falling objects
Create no new hazards
Create no interference
Allow safe lubrication
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Where Mechanical
Hazards Occur
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Point of operation
Power transmission apparatus
Other moving parts
– Nip points
– Pinch points
– Shear points
– Rotating parts
– Flying parts
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Training
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Description and identification
of hazards
How they provide protection
How to use safe guards
When to remove
Protocol when safeguards are
missing
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Methods of
Guarding
Guards
 Devices
 Location/distance
 Feed mechanisms
 Miscellaneous aids
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Guards
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Barrier to prevent access
to danger
Fixed guards
Interlocks
Adjustable
Self-adjusting
Stock Exit
Stock entering
danger zone
Transparent insert
in front panel
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Fixed Frame Panel
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Box Barrier Guard without Inserts
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Adjustable Panels
Rigid - Adjustable
Fixed - Adjustable
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Two and Four Panel Barrier Guard
Not considered a safeguard. Are used with safeguarding devices such as two-hand trips,
presence sensing devices, pullback, or restraints. Designed to protect sides of the point of
operation while the front is open for feeding and removing of pieceparts.
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Three and Five Panel Barrier Guard
Are designed to meet point-of-operation requirements. Rear of machine must
also be guarded when applying front and side guards.
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Interlock Safety Switches
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Devices
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Presence-Sensing
Radiofrequency
Electromechanical
sensing device
Pullbacks
Restraints
Safety Trip Controls
Two-Hand Controls
Two-Hand Trip
Gates
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Presence Sensing Device
Transmitters
Receivers
Control Box
Interconnecting Cables
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Arm-Type Device
Arms
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Arm-Type Pullback
Pullbacks
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Overhead-Type Pullback
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Restraint Device - Arm-Type
Restraint
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Two-Person Overhead
Sliding Restraint
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Control Package with Light Curtain
Interface or Two-Hand Control
Control
Box
Light Curtains
on Floor Stands
Two Operator
Stations
Barriers
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Press brake with two-hand
control sequence
Emergency
Stop
Two-hand
Controls
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Gate Guards - Type “A” and“B”
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Location/Distance
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Hazard analysis
Hazards not accessible
Walls
Fences
Height
Stock dimension
Operators station
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Press Safety Distances
Distance of Opening from Point
of Operation Hazard (inches)
Maximum width of opening
(inches)
1/2 to 1-1/2
1-1/2 to 2-1/2
2-1/2 to 3-1/2
3-1/2 to 5-1/2
5-1/2 to 6-1/2
6-1/2 to 7-1/2
7-1/2 to 12-1/2
12-/12 to 15-1/2
15-1/2 to 17-1/2
17-1/2 to 31-1/2
1/4
3/8
1/2
5/8
3/4
7/8
1-1/4
1-1/2
1-7/8
2-1/8
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Press Safety Distances (cont’d)
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Once a safe distance is calculated,
note the following to right of press.
– Date of measurement
– Stopping time
– Safe distance calculation
– Added distance to allow for normal
deterioration
– Forward most point of operation
– Fixed location of safety device/guard
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Feeding & Injection
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Automatic feeding
Semi-automatic feed
Automatic injection
Semi-automatic
injection
Robots
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Robot Safeguarding
Station
Control
Guard
Machine
Safety
Mat
Light
Curtain
Receiver
Robot
Parts
Bin
Parts
Chute
Guard
Light Curtain
Transmitter
Mirror
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Miscellaneous Aids
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Awareness barriers
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Shields
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Holding tools
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Push stick or block
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Signs for Machinery
OPERATOR
SAFETY PRECAUTIONS
Handout for Anyone Operating This Machine
Before You Operate This Machine You Must
Read and Understand These Safety Precaution
! DANGER
NEVER
Place Your Hands
or Any Part of
Your Body in This
Machine
See Reverse Side for Other Safety Precautions.
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Signs For Machinery
!
PELIGRO
ARIETE HIDRAULICO Y TROQUEL CIERREN
RESULTARA EN LA PERDIDA
DE DEDOS O DE MEMBROS
SI ESTAN METIDO EN LA
MAQUINA
NUNCA
USW UN PEDAL DE PIE PARA
OPERAR ESTA MAQUINA A
MENOS QUE SE PROVEE Y
MANTIENE UN PROTECTOR DE
SEGURIDA PARA EVITAR QUE
LAS MANOS U OTRAS PARTES
DEL CUERPO ENTREN EN LA
MAQUINA.
NO SE DEBE QUITAR O TAPAR ESTE LETRERO.
VEA L REVES PARA MAS INSTRUCCIONES.
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Free-Standing shield used around machines
to protect people from flying objects
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Shield on milling machine
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Sliding Lathe Shield
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