ADJUSTABLE ELECTROMAGNETIC RELEASE

摘要

The present invention discloses an adjustable electromagnetic release. A magnetic yoke is fixed on a bracket. A conductor passes through the bracket and the magnetic yoke and is mounted on the bracket. A shaft is mounted on the top of the bracket and is above the conductor. A push rod is mounted on the shaft and rotates with the shaft about the bracket. An armature is fixed on the push rod, the armature and the magnetic yoke are spaced apart. Adjusting mechanisms are mounted on the shaft. The adjusting mechanisms are mounted between the push rod and the bracket and on both sides of the push rod. A torsion spring is surrounded on the shaft and is within the adjusting mechanism. The adjusting mechanism contacts with the push rod. An adjusting rod is provided with a plurality of adjusting surfaces which contact with the adjusting mechanism. The adjusting rod is able to move along the longitudinal direction. The spring force of the torsion spring enables the push rod rotates towards a direction which makes the armature and the magnetic yoke separate. When large current passes through the conductor, the armature and the magnetic yoke attract each other under the electromagnetic force. When the electromagnetic force is larger than the spring force, the push rod rotates towards a direction which makes the armature and the magnetic yoke close. The push rod strikes the release mechanism to release and cut off the circuit. The electromagnetic force disappears, the push rod resets under the spring force of the torsion spring.

主权项

1. An adjustable electromagnetic release comprising: an armature (101), a magnetic yoke (102), a push rod (103), a conductor (104), a blocking piece (105), an adjusting piece (106), a shaft (107), an adjusting screw (108), a bracket (109), an adjusting rod (110) and a torsion spring (120), wherein
the magnetic yoke (102) is fixed on the bracket (109), the conductor (104) passes through the bracket (109) and the magnetic yoke (102) and is mounted on the bracket (109); the shaft (107) is mounted on the top of the bracket (109) and is above the conductor (104), the shaft (107) is rotatable about the bracket (109); the push rod (103) is mounted on the shaft (107), the push rod (103) rotates with the shaft (107) about the bracket (109), the armature (101) is fixed on the push rod (103), the armature (101) and the magnetic yoke (102) are spaced apart; two adjusting mechanisms are mounted on the shaft (107), the two adjusting mechanisms are mounted on both sides of the push rod (103), and between the push rod (103) and the bracket (109), the torsion spring (120) is surrounded on the shaft (107), the torsion spring (120) is positioned within the adjusting mechanism, one pin of the torsion spring is connected to the armature (101), the adjusting mechanism contacts with the push rod (103); the adjusting rod (110) is provided with a plurality of adjusting surfaces (115), the adjusting mechanism contacts with the adjusting surfaces (115), the adjusting rod (110) is able to move along the longitudinal direction; the spring force of the torsion spring (120) enables the push rod (103) to rotate towards a direction which makes the armature (101) and the magnetic yoke (102) separate, when large current passes through the conductor, the armature (101) and the magnetic yoke (102) attract each other under the electromagnetic force, when the electromagnetic force is larger than the spring force, the push rod (103) rotates towards a direction which makes the armature (101) and the magnetic yoke (102) close, the push rod (103) strikes the release mechanism to release and cut off the circuit, the electromagnetic force disappears, the push rod (103) resets under the spring force of the torsion spring (120).