A linear motor

 

(57) Abstract:

Use: to drive automatic devices such as actuators x-separators. The technical result is to increase reliability and durability. A linear motor includes a housing, coil, shaft-anchor with working body, the damper cylinder with a check valve and a piston, made with continuous gas flow channels, the longitudinal axis of which is not collinear to the longitudinal axis of the shaft-anchor and directed similarly to the gas flow channels Saharova wheels with the ability to initiate torque. On the inner surface of the damper cylinder is made of longitudinal grooves in length, shorter length of the stroke of the shaft-anchor. 2 Il.

The invention relates to electric motors with reciprocating Executive body and can be used to drive automatic devices such as actuators x-separators.

Known linear motor contains a stator comprising a cylindrical yoke with zapressovannye therein ferromagnetic rings, is established with representation from the movable part, made in the form of ferromagnetic "rod in the form of a cylinder, and an inner bearing surface follows the shape of the movable part. (Ed.St. USSR N 860229, H 02 TO 4/25, 1981, BI N 32).

Known electric motor of the reciprocating motion, comprising a fixed cylindrical inductor with magnetic core and the coil in the annular groove and located coaxially with it the movable armature with a magnetic circuit and a short-circuited winding, arranged in the annular groove, and the anchor is an additional spring-loaded cylindrical magnetic core. (Ed. St. USSR N 1169096, H 02 TO 33/02, 1985, BI N 27).

Known engines is not enough durable and reliable in performance, especially in the percussion mode due to asymmetric fatigue wear of the rolling anchor.

Closest to the claimed is the linear motor is made of a ferromagnetic material body with poles, anchor and guide, while the ferromagnetic poles provided on the outer side of the ferromagnetic glasses in the bottom of which has openings, and in the ferromagnetic case, the poles and the glasses are made slits for forming and radius, all the slots are aligned and facing down. (Ed.Einasto due to unsymmetrical wear of the working element shaft-anchor.

The objective of the invention is to improve the reliability and durability of the linear motor.

The task is solved in that in the linear motor of the reciprocating motion, comprising a housing with a coil, shaft-anchor, the damper cylinder with a piston and a check valve according to the invention the piston is supplied through the gas flow channels with the ability to initiate torque, and on the inner surface of the damper cylinder is made of longitudinal grooves to a length less than the length of stroke of the piston, the direction of the channels expiration meets the condition: the longitudinal axis of the channels is not collinear to the longitudinal axis of the shaft-anchor and do not coincide with any plane passing through this axis.

Comparative analysis of the prototype shows that the inventive solution is characterized by the fact that

- the piston is supplied through the gas flow channels with the ability to initiate torque;

- on the inner surface of the damper cylinder is made of longitudinal grooves;

- the length of the longitudinal grooves is shorter than the stroke length of the piston;

- direction channels expiration meets the condition: the longitudinal axis of the channels are not collinear longitudinal of the radiated solution meets the criterion of "novelty."

The comparison of the proposed solutions with analogues failed to reveal any sign that distinguish the claimed solution to the prototype. That allows to make a conclusion on the conformity of the proposed solutions to the criterion of "inventive step".

The invention is illustrated by drawings, where Fig. 1 shows a section of the linear motor, and Fig. 2 - section a-a of the damper cylinder.

A linear motor of the reciprocating motion includes a housing 1, coils 2, 3, shaft-anchor 4 working body 5, the damper cylinder 6 with longitudinal grooves 7, the piston 8 with the through channels to the expiration of 9, made on the external surface and in the body of the piston, the check valve 10.

A linear motor of the reciprocating motion is as follows.

Coil 2 forward stroke initiates movement of the shaft-armature 4 in the direction with the implementation of the physical effects of working body 5, the coil 3 returns the shaft is anchored to its original position. The process is repeated with high speed and frequency of strokes.

Shock loads are reduced damping cylinder 6 and the piston 8 during reverse motion of the shaft-anchor. During the return stroke of the piston is not experiencing any significant braking tnego.

Since the longitudinal grooves is shorter than the stroke length of the piston, the latter shrinks in end-stage reverse gas, simultaneously lockable non-return valve 10 and the braking piston compressed gas is expelled through the channels in the piston with the initiation of the reactive forces acting on the piston. The location of the through channels similar to the arrangement of the channels expiration in Saharova wheel (Soviet encyclopedic dictionary. -M.: Soviet encyclopedia, 1984, S. 1181) and causes a torque on the shaft of the anchor, which allows the stepping rotation of the shaft-anchor 2-5ofor each move.

The constant rotation of the shaft-anchor for long-term operation can improve the wear resistance of the latter due to the symmetric fatigue wear, especially in the area of the working body 5. When dynamic loads due to the symmetric distribution of fatigue wear a prolonged period of health shaft-anchor 6-8 times that, in turn, improves the reliability and durability of the linear motor.

A linear motor of the reciprocating movement, comprising a casing, coil, shaft-anchor with working body, the damper cylinder with piston and reverse the end-to-end channels for gas flow, the longitudinal axis of which is not collinear to the longitudinal axis of the shaft-anchor and do not coincide with any plane passing through this axis, so that they are directed similarly to the channels expiration Saharova wheels with the ability to initiate torque on the inner surface of the damper cylinder is made of longitudinal grooves, the length of which is shorter than the stroke length of the piston.

 

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