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Self-locking electric cylinders, including servo motors, worm gear reducers, screw assemblies and anti-rotation mechanisms. The screw assembly includes a mating screw and a screw nut, and an end face of a lead screw nut is fixedly disposed with the linear actuator. The anti-rotation mechanism is prevented from rotating by two planes parallel to the outer surface of the linear actuator. The servo motor is connected to the one-way transmission through one end of the screw shaft through a worm gear reducer. The new transmission through the worm gear reducer utilizes the unidirectional self-locking characteristic of the worm gear drive to realize the mechanical self-locking of the electric cylinder, thereby eliminating the dependence on the electronic components and ensuring the reliability during operation; the output of the linear motion It is realized by the linear actuator, and the anti-rotation realized by the anti-rotation mechanism of the linear actuator realizes the linear motion of converting the nut into the rotary motion group, and the design is reasonable, the structure is ingenious, the work is stable, and the connection is compact.-Self-locking electric cylinder
The new type belongs to the technical field of electric cylinders, especially electric cylinders with self-locking performance. The electric cylinder is a modular product designed by integrating a servo motor and a lead screw. It converts the rotary motion of the servo motor into linear motion. At the same time, the maximum advantage of precise speed control, precise speed control and precise torque control of servo motor is transformed into precise speed control, precise position control and precise thrust control. The new revolutionary realization of high precision linear motion series At present, electric cylinders have been widely used at home and abroad. Among them, the load and life of the electric cylinder have always been an important indicator of the electric cylinder. Self-locking, large-load, long-life electric cylinders are also widely used in many engineering applications. However, current electric cylinders use electronic self-locking in self-locking. In the event of an electrical failure, the electric cylinder loses its self-locking performance. At the same time, when the electric cylinder needs to be self-locking at the same time, large load and long life requirements. The structure of the electric cylinder is complicated, the volume is large, and the mechanical wear is more serious, which is not conducive to practical use.
Practical model content
A limit sensor placed on the cylinder of the electric cylinder.
In addition, the limit sensor is divided into three, which are used to test the zero position of the electric cylinder and the limit positions at both ends of the expansion and contraction.
In addition, the screw assembly further includes: a thrust ball bearing and an angular contact bearing installed at one end of the worm gear reducer; and a sliding bearing mounted at the other end. The thrust ball bearing and the angular contact bearing are matched with the lead screw, and the sliding bearing cooperates with the linear actuator.
Further, the lead screw is a ball screw.
Compared with the prior art, the following beneficial technical effects are achieved: The new one-way self-locking characteristic of the worm gear realizes the mechanical self-locking of the electric cylinder. Driven by the drive connection of the worm gear reducer, eliminating the dependence on electrical components, ensuring and improving operational reliability. The output of the linear motion is realized by a linear actuator. The anti-rotation achieved by the anti-rotation mechanism of the linear actuator realizes the linear motion of converting the nut into a rotating motion group, and has a reasonable design, a clever structure and a compact connection.
In addition, by providing a rolling screw, the friction between the screw assemblies can be better reduced, the overall rigidity of the screw assembly can be improved, and high-speed feed and micro feed can be achieved.
In use, the servo motor performs power input and is transmitted to the lead screw in the screw assembly through the unidirectional direction of the worm gear reducer, thereby driving the screw nut to generate a rotation tendency and preventing the anti-rotation mechanism from applying a thrust 对 to the wire. The lever nut rotates to convert the rotary motion into a linear motion that is output outward from the earring.
Self-locking electric cylinders include: servo motor, worm gear reducer, screw assembly and anti-rotation mechanism; the screw assembly includes matching screws and nuts, and the end face of the nut is fixed with a linear actuator. The outer surface of the rotating mechanism and the linear actuator are prevented from rotating in two parallel planes. The servo motor passes through a worm gear reducer and a one-way transmission. Connect to one end of the lead screw. A self-locking electric cylinder according to claim 1, further comprising a limit sensor disposed on a cylinder of said electric cylinder. The self-locking electric cylinder according to claim 1 or 2, wherein the limit sensor is divided into three, and is used for the zero position of the electric cylinder and the limit of the two ends when being extended and contracted. carry out testing.
The self-locking electric cylinder according to claim 4, wherein the lead screw is a ball screw.
A self-locking electric cylinder according to any one of the preceding claims, wherein a free end of said linear actuator is coupled to said earring, said worm gear reducer being provided with a ground anchor.
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