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Automatic reset: Automatically returns to the initial position after the action, but it may cause an error start.
Manual reset: After the action, there is a self-locking device that can be held in the operating position. Manual reset of the handle is required to return it to its original position.
The pull rope switch is a necessary safety protection device for the belt conveyor to prevent the accident from expanding and bring about serious losses. Thanks to its easy installation and reliable switching, it has been widely used in the field of belt transport.
First, the working principle Pull rope switch from the lever, reset handle, cam, lock slot and micro switch and other components.
The pull rope switches are installed on the racks on both sides of the belt conveyor, and the switches are connected along the sides of the conveyor with wire ropes. When an emergency occurs on the conveyor belt device, the steel wire rope is pulled anywhere along the wire, and the steel wire rope drives the drive arm to rotate. The torsion spring is driven by the drive shaft to displace the precision cam and drive the micro switch to cut off the control circuit so that the conveyor stops operating.
Second, the installation adjustment rope switch should be installed on both sides of the conveyor with access to the place, the installation position should ensure that maintenance personnel in an emergency easy to operate.
1. Fix the drawstring switch on the rack.
2. The distance between the two switches on one side is about 50m. Use a wire rope with a diameter of Φ4 to connect them. The elasticity should be moderate.
3. In order to reduce the impact of the weight of the wire rope on the start of the switch, a support ring is installed on the frame every 3m to support the wire rope.
4. The other end of the wire rope is tied to a tension spring (fixed by a rope tie), and the tensioner is used to tension the tension ropes on both sides without affecting the normal use, and the tension on both sides is balanced.
(Note: For climber conveyors, the switch spacing and rope length should be minimized.)
Third, the scope of application Pull rope switch is a switch sensor (that is, non-contact travel switch), mainly used for conventional belt conveyor, shuttle conveyor, skirt type feed conveyor, bucket elevator, packaging production line , stacking/reclaiming system, cranes, excavators, ship loading and unloading systems, horizontal feeders and other equipment on-site emergency parking protection device. When an emergency occurs, pulling the puller switch anywhere along the line can send a stop signal to protect the person and equipment.
Because it has the characteristics of both the trip switch and the micro switch, it also has the sensing performance, and it has reliable operation, stable performance, fast frequency response, long service life, strong anti-dry worry, waterproof, shockproof, and corrosion resistance. It is widely used in belt conveyor conveyor systems used in machinery, mining, textile, printing, chemical, metallurgy, light industry, valves, power, security, railways, transportation, cement, port terminals and other industries.
Fourth, pay attention to matters 1, first cut off the main power, then use a universal meter to measure the FireWire, the switch must be installed at one end of the FireWire.
2. Cut the FireWire in a suitable place and have two connectors. The pull switch also has two connectors.
3. Peel the two joints of the fire wire out of the wire and connect them to the two connectors of the switch.
4. Cut out the long wire at the connected connector to prevent the two wires from colliding with the short circuit.
5. Unscrew the cover of the cable switch and you can see there is a metal shaft, which has a hole at one end.
6. There is also a hole on the side of the plastic shell of the cable switch. Pull the cable through the hole of the plastic shell and then pull the cable into the cable switch. Introduce one end of the cable into the spindle, knot the cable, and shorten the cable that is too long after knotting. That's it.
7. Finally, tighten the cover of the pull switch to prevent electric shock.
HFKLT2-I automatic reset bidirectional rope switch HFKLT2-II manual reset bidirectional rope switch KLT2-I automatic reset bidirectional balance rope switch KLT2-II manual reset bidirectional balance rope switch SPS-2D Ramzi type rope switch HFKLT2- III pull rope lock switch
Two-way pull rope switch works
The pull rope switch is divided into two kinds of manual reset and automatic reset, and it needs to meet the national IP level.