Electromagnetic locking device with rotary joint
A rotary joint, electromagnetic lock technology, applied in the direction of brake actuator, machine/bracket, brake type, etc., can solve the problem of weak locking, can not adapt to the locking and loosening switching, etc., to achieve compact structure, important and practical Value and effect of good application prospects
Inactive Publication Date: 2009-08-19
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology
[0003] The present invention discloses a non-friction plate type rotary joint bidirectional electromagnetic locking device with axial force applied and radially locked, which mainly solves the existing problems in the prior art that cannot be adapted to the switching of locking and releasing, and the locking is not firm. other technical issues
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Embodiment
[0019] Embodiment: Accompanying drawing 1 represents: establish upper plate 10 as the fixed end of joint, lower plate 18 is free end, and locking spring 3 has 6, is placed in 6 apertures of the coil 4 inner side of electromagnet 2, passes through The copper magnetic isolation spacer 6, facing the armature 5a, presses the steel ball 7 arranged on the circumference from the side through the conical wedge angle of the locking cone 5b to abut against the axial slot of the stop sleeve 8, and locks itself.
[0020] In order to ensure that the gap between the electromagnet 2 and the armature suction plane 5b is uniform, three cylindrical guide pins 17 uniformly distributed around the circumference are used as guides for the suction and disengagement of the suction plane 5a, and the processing of the guide pin holes adopts an electromagnet Match the drill reamer with the armature to ensure the guiding accuracy, and the guide pin 17 ensures that the armature and the electromagnet do not...
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The invention relates to a locking device, especially an electromagnetic locking device for a rotary joint, which includes several locking springs, electromagnets, armatures, stop sleeves, etc. The guide pin between the iron and the armature; the locking spring is set in a number of concentric small holes arranged on the end surface of the electromagnet close to the inner side of the coil; one end of the armature is a locking cone, and the other end is a suction plane; the inner part of the stop sleeve There are several axial notches on the circumferential surface; steel balls equal to the notches are arranged in the cavity formed between the locking cone and the notch of the stopper sleeve; when the electromagnet is de-energized, the locking spring lifts up The suction plane, the locking cone presses the steel ball arranged around the circumference against the notch of the stopper sleeve from the side, and self-locks; after power is turned on, the armature is pulled under the electromagnetic attraction of the electromagnet to release the steel ball. The invention has the advantages of fast locking and releasing switching, fast locking, etc., and is suitable for use on operating microscopes and other mechanisms with rotary joints.
Description
technical field [0001] The invention relates to a locking device, in particular to a bidirectional electromagnetic locking device for a rotary joint. Background technique [0002] Electromagnetic clutches are generally used to separate and engage power transmission shafts, and electromagnetic brakes are generally used to quickly stop rotating shafts. They are commonly used in the friction plate type, which use friction to transmit torque and use friction to generate heat to absorb rotational kinetic energy. The overrunning clutch transmits motion or power in one direction, and can also realize the one-way locking function. And for the two-way rotating joint of non-transmission power, as the locking of operating microscope frame rotating joint and other manual rotating joints, above-mentioned each device all can't adapt. For the locking of rotary joints, there are generally mechanical and electromagnetic types. The common manual mechanical joint locking is to lock the rota...
Claims
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IPC IPC(8): F16D65/21F16M11/16F16D65/18
Inventor 张冰蔚
Owner JIANGSU UNIV OF SCI & TECH