TWI408483B - A device that adjusts the angle of the slip ring in flight in a non-contact manner - Google Patents

Abstract

A device for adjusting a slip ring angle during flight in a noncontact manner comprises: a sleeve having a positioning bearing surface at one end; at least one slip ring, one elastic ring and one locking collar which are connected to the sleeve, such that the slip ring and the elastic ring are secured between the locking collar and the positioning bearing surface, and the slip ring uses the frictional force generated by the pre-stress of the elastic ring to operate synchronously with the sleeve; and at least one impulse magnetic field generator for generating an impulse magnetic field acting on the slip ring. Accordingly, during the rotation of the slip ring, the impulse magnetic field produced by the impulse magnetic field generator is imposed on the circumferential surface of the slip ring to produce inductive eddy current, thereby forming a tangential pushing force opposite to the rotation direction of the rotary axle on the slip ring. When the counteracting pushing force produced by the eddy current is greater than the frictional force generated by the pre-stress of the elastic ring, the slip ring is inhibited from synchronous rotation with the sleeve and produces a small angle shift relative to the sleeve, thereby achieving the effect of controlling the rotation angle of the slip ring.

Description

Device for adjusting the angle of the slip ring in flight in a non-contact manner

The invention relates to the technical adjustment of the angle of the rotating object, in particular to a device for adjusting the angle of the slip ring in flight in a non-contact manner.

In many rotary machine applications, an angle-adjustable slip ring must be provided on the rotating shaft. This slip ring is usually equipped with certain functions for specific functions, such as counterweights for rotary balancing or zero position of the rotating shaft. Magnetic (or optical) marking point; in normal operation, the slip ring is integrated with the rotating shaft and rotates synchronously, but when some external conditions change, the angle of the sliding ring relative to the rotating shaft must be adjusted . For example, when the centroid position of the high-speed rotating shaft changes due to wear of the mechanical parts or external load conditions, we must adjust the angular position of the weight with respect to the rotating shaft to compensate for the variation of the mass imbalance and make the rotating machine Go back to the balance state.

The traditional method of adjusting the angle is usually unable to adjust during the rotation, but must first stop the rotation of the rotating shaft, and then manually or mechanically actuate the sliding ring to rotate to the desired position relative to the rotating shaft. Or angle, after which the rotating shaft can be rotated and operated normally. This kind of contact adjustment method can be adjusted because it needs to be stopped first, so the adjustment is inconvenient.

Some angle adjustment techniques may also use a non-contact electromagnetic force technique to adjust the angle of the slip ring on a rotating shaft in flight; for example, an electromagnetic force actuated weight ring developed by US Pat. No. 5,757,662 The angle adjustment technology is a patented technology that can adjust the slip angle of the rotating shaft in flight. However, due to the need to use relatively complicated precision mechanical bearings and array permanent magnets, the device is currently quite expensive, and the structure is complicated and volume. Larger.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a means for adjusting the angle of an in-flight slip ring in a non-contact manner, which can adjust the angle of the slip ring relative to the axis of rotation in a non-contact manner.

In order to achieve the foregoing object, a device for adjusting the angle of an in-flight slip ring in a non-contact manner according to the present invention comprises: a sleeve for being sleeved on a rotating shaft of a rotating machine, one end of the sleeve Having a positioning bearing surface; at least one slip ring, sleeved on the sleeve; an elastic ring sleeved on the sleeve; a locking collar connected to the other end of the sleeve, and the slip ring The elastic ring is clamped between the locking collar and the positioning bearing surface. Under normal circumstances, the sliding ring rotates synchronously with the sleeve by the friction generated by the pre-pressure of the elastic ring; The slip ring is provided with at least one pulse magnetic field generator for generating a pulse magnetic field to act on the slip ring, and the generated pulse magnetic field has at least a vertical component acting on the torus of the slip ring; thereby, When the slip ring rotates, the pulsed magnetic field generated by the pulse magnetic field generator acts on the toroidal surface of the rotating ring to generate an induced eddy current, and the induced eddy current and the external product of the pulsed magnetic field are in the sliding One phase on the ring The tangential thrust in the direction of rotation of the rotating shaft. When the reverse thrust generated by the induced eddy current is greater than the friction generated by the pre-pressure of the elastic ring, the slip ring is no longer rotated synchronously with the sleeve, and is actuated by this method. The slip ring in rotation produces a small angular displacement and the effect of controlling the angle of rotation of the slip ring is achieved by controlling the number of pulses of the pulsed magnetic field.

In order to explain the technical features of the present invention in detail, the following preferred embodiments are described below with reference to the accompanying drawings, wherein, as shown in the first to second drawings, a preferred embodiment of the present invention provides The device 10 for adjusting the angle of the in-flight slip ring in a non-contact manner is mainly composed of a sleeve 11, a slip ring 21, an elastic ring 31, a locking collar 41, and a pulse magnetic field generator 51, wherein: The sleeve 11 is sleeved on a rotating shaft 91 of a rotating machine, and one end of the sleeve 11 has a positioning bearing surface 12. The surface of the sleeve 11 is provided with two grooves 14 along its long axis.

The slip ring 21 is sleeved on the sleeve 11. Each of the two ends of the slip ring 21 is further provided with a buffer washer 22, and each of the inner surfaces of the buffer washer 22 has two bumps 221, and the buffer washers 22 are sleeved on the sleeve 11 and are embedded with the bumps 221 thereof. The groove 14 of the sleeve 11. The slip ring 21 is made of a metal material and generates an induced eddy current when subjected to a pulsed magnetic field.

The elastic ring 31 is sleeved on the sleeve 11.

The locking collar 41 is connected to the other end of the sleeve 11 , and the slip ring 21 and the elastic ring 31 are clamped between the locking collar 41 and the positioning bearing surface 12 . The elastic ring 31 is subjected to a clamping force of the locking collar 41 and the positioning bearing surface 12 to generate an elastic recombination force, which is used to generate a pre-stress on the slip ring 21. The slip ring 21 rotates the slip ring 21 in synchronism with the sleeve 11 by the frictional force generated by the pre-pressure of the elastic ring 31.

The pulse ring magnetic field generator 51 is disposed on the slip ring 21, and the pulse magnetic field generator 51 is configured to generate a pulse magnetic field to act on the slip ring 21, and the generated pulse magnetic field has at least a vertical component acting on the ring of the slip ring 21. surface. The pulse generator is composed of a pulse current generator 52 and an electromagnet 54 in the shape of a C. The electromagnet 54 has an air gap 55 for partial insertion of the slip ring 21.

Thereby, when the slip ring 21 rotates, the pulse magnetic field generated by the pulse magnetic field generator 51 acts on the toroidal surface of the rotating slip ring 21 to generate an induced eddy current, and the induced eddy current and the pulsed magnetic field are generated. The outer product will cause a tangential thrust on the slip ring 21 opposite to the direction of rotation of the rotating shaft 91. When the reverse thrust generated by the induced eddy current is greater than the friction generated by the elastic ring preload, the method can be utilized. The slip ring 21 that is actuated to rotate produces a small angular displacement, and the effect of controlling the angle of rotation of the slip ring 21 is achieved by controlling the number of pulses of the pulsed magnetic field.

In the present embodiment, the elastic ring 31 is located between the locking collar 41 and a cushioning washer 22 adjacent to the locking collar 41. The elastic ring 31 provides the effect of the pre-stress by the elastic recombination force, and the friction ring between the slip ring 21 and each of the cushion washers 22 is fixed to the rotating shaft 91 without being subjected to the vortex. In the case of current-induced power, this frictional force causes the slip ring 21 to rotate synchronously with the sleeve 11 along with the axis of rotation.

Referring to the first figure, in the actual use, the rotating device 10 is mainly sleeved on the rotating shaft 91 of a rotating machine, and the sliding ring 21 is received by the positioning bearing surface 12 and the The locking collar 41 is clamped to each element therebetween, thereby being fixed to the rotating shaft 91. When the rotating shaft 91 rotates, the pulse magnetic field generator 51 can be used to actuate the angular displacement of the sliding ring 21 relative to the rotating shaft 91, thereby changing the angular position of the sliding ring 21 relative to the rotating shaft 91.

Referring to the third figure, the elastic ring 31' may also be disposed between the positioning bearing surface 12 and a cushioning washer 22 adjacent to the positioning bearing surface 12. The elastic ring 31' also has the effect of elastic cushioning in the foregoing embodiment. Its setting position is not limited between the locking collar 41 and the slip ring 21.

In addition, as shown in the fourth figure, the slip ring 21 can also be operated by using two or more pulsed magnetic field generators 51, thereby generating a greater effect, and adjusting the angle of the slip ring 21 is also faster.

It can be seen from the above that the rotating device provided by the present invention uses the pulse magnetic field generator to perform non-contact angle adjustment on the slip ring, and does not need to stop when adjusting, so that it has the advantages of convenient adjustment and simple structure.

10. . . Device for adjusting the angle of the slip ring in flight in a non-contact manner

11. . . Sleeve

12. . . Positioning bearing surface

14. . . Groove

twenty one. . . Slip ring

twenty two. . . Buffer washer

221. . . Bump

31,31’. . . Elastic ring

41. . . Lock collar

51. . . Pulsed magnetic field generator

52. . . Pulse current generator

54. . . Electromagnet

55. . . Air gap

91. . . Rotary axis

The first figure is a combined perspective view of a preferred embodiment of the present invention.

The second drawing is an exploded perspective view of a preferred embodiment of the present invention showing the exploded state after removal of the pulsed magnetic field generator.

The third figure is an exploded perspective view of a preferred embodiment of the present invention showing the state in which the elastic ring is located between the positioning bearing surface and a cushioning washer.

The fourth drawing is another assembled perspective view of a preferred embodiment of the present invention showing the state in which two pulsed magnetic field generators act on a slip ring.

10. . . Device for adjusting the angle of the slip ring in flight in a non-contact manner

11. . . Sleeve

12. . . Positioning bearing surface

14. . . Groove

twenty one. . . Slip ring

twenty two. . . Buffer washer

31. . . Elastic ring

41. . . Lock collar

51. . . Pulsed magnetic field generator

52. . . Pulse current generator

54. . . Electromagnet

55. . . Air gap

91. . . Rotary axis

Claims (6)

A device for adjusting the angle of an in-flight slip ring in a non-contact manner, comprising: a sleeve for sleeved on a rotating shaft of a rotating machine, the sleeve having a positioning bearing surface at one end; at least one slip ring The sleeve is sleeved on the sleeve, and a buffer gasket is respectively sleeved on the sleeve; an elastic ring is sleeved on the sleeve for generating a pre-stress by using an elastic force; a locking sleeve a ring is connected to the other end of the sleeve, and the slip ring and the elastic ring are clamped between the locking collar and the positioning bearing surface; the slip ring is generated by the pre-stress of the elastic ring Frictional force causes the slip ring to rotate synchronously with the sleeve; the slip ring is provided with at least one pulse magnetic field generator for generating a pulse magnetic field to act on the slip ring, and the generated pulse magnetic field is at least Having a vertical component acting on the torus of the slip ring; thereby, when the slip ring rotates, the pulse magnetic field generated by the pulse magnetic field generator acts on the toroidal surface of the rotating ring to generate an induced vortex Current, induced eddy current and the pulsed magnetic The outer product will cause a tangential thrust on the slip ring opposite to the direction of rotation of the rotating shaft. When the reverse thrust generated by the induced eddy current is greater than the friction generated by the elastic ring pre-pressure, the slip ring is no longer The sleeve rotates synchronously and produces a small angular displacement relative to the sleeve, and the effect of controlling the angle of rotation of the slip ring is achieved by controlling the number of pulses of the pulsed magnetic field. The device for adjusting the angle of the in-flight slip ring in a non-contact manner according to the first aspect of the patent application, wherein: the sleeve surface is provided with at least one groove along a long axis thereof, and each of the buffer washer inner ring surface has At least one bump, the buffer gasket is embedded in the groove of the sleeve with its bump. The device for adjusting the angle of the in-flight slip ring in a non-contact manner according to the first aspect of the patent application, wherein the elastic ring is adjacent to the locking collar. The device for adjusting the angle of the in-flight slip ring in a non-contact manner according to the first aspect of the patent application, wherein the elastic ring system is adjacent to the positioning bearing surface. The device for adjusting the angle of the flying slip ring in a non-contact manner according to the first aspect of the patent application, wherein the slip ring is made of a metal material and generates an induced eddy current when subjected to a pulsed magnetic field. The device for adjusting the angle of the in-flight slip ring in a non-contact manner according to the first aspect of the patent application, wherein the pulse magnetic field generator is composed of a pulse current generator and an electromagnet in a C shape. The electromagnet has an air gap for partial placement of the slip ring.