Small Elevators For Homes Speed limiter And Safety Pliers
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In normal-operated cars, there is very little chance of a fall
accident, but this possibility cannot be completely ruled out. There are several
possible reasons for this common:
1. The traction wire rope is completely
broken for various reasons;
2. The teeth, shafts, keys and pins of the worm
gear are broken;
3. The traction friction rope groove is seriously worn,
causing the equivalent friction coefficient to drop sharply, and the balance is
out of balance, and the car is overloaded, the wire rope and the traction sheave
slip;
4. The car is overloaded seriously, the balance is out of balance, and
the brake is out of order;
5. Due to some special reasons, such as the
balance weight is lighter and the car's own weight is lighter, the pressure on
the traction sheave of the wire rope is seriously reduced, resulting in
imbalance of the car side or the counterweight side, causing the wire rope to
slip on the traction sheave.
As long as one of the above five reasons occurs,
a serious accident in which the car (or counterweight) falls rapidly may
occur.
Therefore, in accordance with relevant state regulations, whether it
is passenger elevators, cargo Small Elevators
For Homes, medical elevators, etc., the speed limiter and safety clamp
system should be installed.
In the elevator's safety protection system, the
comprehensive safety guarantees provided are speed limiters, safety gears and
buffers. When the elevator is in operation for any reason, the car is in danger
of overspeeding or even falling, and all other safety protection devices are not
functioning, then the speed limiter and the safety gear are used (the car is in
operation) And the action of the damper stops the car without causing damage to
passengers and equipment. Therefore, the speed limiter and the safety gear are
protection devices for preventing the elevator from overspeeding and losing
control.
The speed limiter is a device for speed response and operation of
the safety gear. When the car running speed reaches a limit value (generally
more than 115% of the rated speed), it can send an electrical signal and
generate mechanical action to cause the safety gear to work safely. Therefore,
the speed limiter detects and manipulates when the elevator overspeeds and when
the overspeed reaches a critical value.
The safety gear is caused by the
action of the speed limiter, forcing the car or the counterweight to stop on the
guide rail, and at the same time cutting off the safety device of the elevator
and the power source. The safety gear is the actuator that forces the car to
stop under speed limit control.
According to the safety regulations of the
elevator, any car that pulls the elevator must be equipped with a safety gear
device, and it is stipulated that the safety gear device must be operated by the
speed limiter. It is forbidden to use the electric, hydraulic or pneumatic
device to operate the safety gear. When there is a passage or space that can
pass under the elevator pit, the counterweight safety clamp device should also
be provided for the counterweight.
The composition of the safety gear device
and its motion analysis:
The safety gear device is mounted on the car frame
or the counterweight frame, and is composed of two parts;
(1) Control
mechanism: It is a set of linkage systems through which the speed limiter
operates the safety gear.
(2) Stop mechanism: Also called safety clamp
(mouth), the function is to make the car or counterweight stop and clamp on the
guide rail.
[size= medium]In normal-operated cars, there is very little chance of a fall
accident, but this possibility cannot be completely ruled out. There are several
possible reasons for this common:
1. The traction wire rope is completely
broken for various reasons;
2. The teeth, shafts, keys and pins of the worm
gear are broken;
3. The traction friction rope groove is seriously worn,
causing the equivalent friction coefficient to drop sharply, and the balance is
out of balance, and the car is overloaded, the wire rope and the traction sheave
slip;
4. The car is overloaded seriously, the balance is out of balance, and
the brake is out of order;
5. Due to some special reasons, such as the
balance weight is lighter and the car's own weight is lighter, the pressure on
the traction sheave of the wire rope is seriously reduced, resulting in
imbalance of the car side or the counterweight side, causing the wire rope to
slip on the traction sheave.
As long as one of the above five reasons occurs,
a serious accident in which the car (or counterweight) falls rapidly may
occur.
Therefore, in accordance with relevant state regulations, whether it
is passenger elevators, cargo [url=https://www.otsedt.com/]Small Elevators
For Homes[/url], medical elevators, etc., the speed limiter and safety clamp
system should be installed.
In the elevator's safety protection system, the
comprehensive safety guarantees provided are speed limiters, safety gears and
buffers. When the elevator is in operation for any reason, the car is in danger
of overspeeding or even falling, and all other safety protection devices are not
functioning, then the speed limiter and the safety gear are used (the car is in
operation) And the action of the damper stops the car without causing damage to
passengers and equipment. Therefore, the speed limiter and the safety gear are
protection devices for preventing the elevator from overspeeding and losing
control.
The speed limiter is a device for speed response and operation of
the safety gear. When the car running speed reaches a limit value (generally
more than 115% of the rated speed), it can send an electrical signal and
generate mechanical action to cause the safety gear to work safely. Therefore,
the speed limiter detects and manipulates when the elevator overspeeds and when
the overspeed reaches a critical value.
The safety gear is caused by the
action of the speed limiter, forcing the car or the counterweight to stop on the
guide rail, and at the same time cutting off the safety device of the elevator
and the power source. The safety gear is the actuator that forces the car to
stop under speed limit control.
According to the safety regulations of the
elevator, any car that pulls the elevator must be equipped with a safety gear
device, and it is stipulated that the safety gear device must be operated by the
speed limiter. It is forbidden to use the electric, hydraulic or pneumatic
device to operate the safety gear. When there is a passage or space that can
pass under the elevator pit, the counterweight safety clamp device should also
be provided for the counterweight.
The composition of the safety gear device
and its motion analysis:
The safety gear device is mounted on the car frame
or the counterweight frame, and is composed of two parts;
(1) Control
mechanism: It is a set of linkage systems through which the speed limiter
operates the safety gear.
(2) Stop mechanism: Also called safety clamp
(mouth), the function is to make the car or counterweight stop and clamp on the
guide rail.[/size]
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In normal-operated cars, there is very little chance of a fall
