CN217563507U - Adjusting device of permanent magnet speed regulator and permanent magnet speed regulator - Google Patents

Abstract

The application relates to the technical field of permanent magnet speed regulators, specifically discloses adjusting device and permanent magnet speed regulator of permanent magnet speed regulator, include: the fixed supporting seat is fixedly provided with a driver, and the driver comprises a driving shaft moving along the axial direction of the output shaft and a speed regulating structure for controlling the moving speed of the driving shaft; the sliding support part comprises a sliding connecting sleeve which is sleeved on the output shaft in a sliding mode and a sliding support which is rotatably installed on the sliding connecting sleeve, the sliding connecting sleeve is used for being connected with the induction rotor, and the driving shaft drives the sliding connecting sleeve to slide along the axial direction of the output shaft through the sliding support so as to drive the induction rotor to move axially. This scheme can realize the variable speed regulation of drive shaft through the axial displacement speed of speed governing structure control drive shaft, makes this device can adapt to different operating modes, and adaptability is strong, and maneuverability is good. Compared with the existing adjusting device, the adjusting device has the advantages that devices such as an internal worm pair or a screw pair are omitted, the structure is simple, and the operation is reliable.

Description

Adjusting device of permanent magnet speed regulator and permanent magnet speed regulator

Technical Field

The application relates to the technical field of permanent magnet speed regulators, in particular to an adjusting device of a permanent magnet speed regulator and the permanent magnet speed regulator.

Background

The permanent magnet speed regulator is a device for realizing transmission by utilizing magnetic force, and comprises a pair of induction rotors and a permanent magnet rotor, wherein the output rotating speed of the permanent magnet speed regulator is controlled by adjusting the size of a coupling magnetic field between the induction rotors and the permanent magnet rotor. The method for adjusting the magnitude of the coupling magnetic field between the induction rotor and the permanent magnet rotor is generally realized by adjusting the axial distance between the induction rotor and the permanent magnet rotor.

An adjusting mechanism is configured on the existing permanent magnet speed regulator, and the existing adjusting mechanism is usually installed on one side of the induction rotor and adjusts the axial distance between the induction rotor and the permanent magnet rotor by adjusting the axial movement of the induction rotor.

The adjusting device on the market is provided with a worm pair, a screw pair, a hydraulic adjusting mechanism and the like, and the principle is that an actuator drives an internal executing mechanism to convert rotary displacement into axial displacement. However, the adjusting device has a complex structure and poor reliability, occupies a large axial space, selects a standard actuator with a fixed speed ratio as a power driving source, is easy to clamp in the adjusting process and has low adjusting sensitivity.

SUMMERY OF THE UTILITY MODEL

Based on this, provide an adjusting device and permanent magnet speed regulator of permanent magnet speed regulator to solve prior art adjusting device structure complicacy, the space accounts for than big, the not high problem of regulation sensitivity.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

an adjusting device of a permanent magnet speed regulator, the permanent magnet speed regulator includes induction rotor and output shaft, induction rotor drives the output shaft rotates, adjusting device includes:

the fixed support seat is fixedly provided with a driver, and the driver comprises a driving shaft moving along the axial direction of the output shaft and a speed regulating structure for controlling the moving speed of the driving shaft;

the sliding support part comprises a sliding sleeve arranged on the output shaft and a sliding support arranged on the sliding sleeve in a rotating mode, the sliding sleeve is used for being connected with the induction rotor, and the driving shaft drives the sliding sleeve to slide along the axial direction of the output shaft through the sliding support so as to drive the induction rotor to move axially.

In one embodiment, a guide mechanism is arranged between the fixed support seat and the sliding support seat, and the guide mechanism provides guidance for the axial movement of the sliding support seat.

In one embodiment, the guide mechanism comprises a guide post and a guide cylinder, the guide cylinder is fixedly mounted on the fixed support seat, the guide post is fixedly connected with the sliding support, and the guide post and the guide cylinder are in sliding fit.

In one embodiment, the guide cylinder is a linear bearing.

In one embodiment, a telescopic protective cover is sleeved on the driving shaft, and two ends of the protective cover are fixedly connected with the fixed supporting seat and the sliding support respectively; and/or

The guide post is sleeved with a telescopic protective cover, and two ends of the protective cover are respectively fixedly connected with the fixed supporting seat and the sliding support.

In one embodiment, the driver has two and the two drivers are symmetrically arranged with respect to the output shaft; and/or

Two guide mechanisms are symmetrically arranged on two sides of each driver.

In one embodiment, the actuator is an electric cylinder.

In one embodiment, the sliding connection sleeve is provided with a limiting component, and the limiting component axially positions the sliding support on the sliding connection sleeve.

In one embodiment, the limiting assembly comprises a first limiting structure fixedly arranged on the sliding connection sleeve, a second limiting structure detachably connected to the sliding connection sleeve, and a locking structure, the sliding support is axially positioned between the first limiting structure and the second limiting structure, and the locking structure locks the second limiting structure on the sliding connection sleeve.

On the other hand, the utility model also provides a permanent magnet speed regulator, including foretell permanent magnet speed regulator adjusting device.

The beneficial effect of this scheme:

the application provides a permanent magnet speed regulator's adjusting device can realize the variable speed regulation of drive shaft through the axial displacement speed of speed governing structure control drive shaft, makes this device can adapt to different operating modes, and adaptability is strong, and maneuverability is good. Compared with the existing adjusting device, the adjusting device has the advantages that an internal worm pair or screw pair and the like are omitted, the structure is simpler, and the operation is reliable.

Drawings

Fig. 1 is a schematic view of an adjusting device of a permanent magnet speed regulator according to an embodiment of the present invention;

fig. 2 is a front view of an adjusting device of a permanent magnet speed governor according to an embodiment of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a partially enlarged view of C in fig. 3.

Reference numerals in the drawings of the specification include: the device comprises a fixed supporting seat 1, an output shaft 2, a driver 3, a speed regulating structure 31, a driving shaft 32, a floating joint 33, a guide mechanism 4, a guide cylinder 41, a guide post 42, a sliding supporting part 5, a sliding connecting sleeve 52, a sliding support 51, a connecting disc 53, a bearing 54, a spacer ring 55, a locking nut 56, a bearing isolator 57, an end cover 58, an inner baffle 59, a connecting piece 60, a protective cover 6 and an induction rotor 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It should be noted that the drawings provided in the present embodiment are only for schematically illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, amount and proportion of each component may be changed arbitrarily and the layout of the components may be more complicated.

The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention.

References in this specification to "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are for convenience only to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

For ease of description and understanding, the positional relationship of the various components of the permanent magnet governor adjustment arrangement is specifically described in the left-right direction throughout, with specific reference to the left-right reference directions illustrated in fig. 2.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to fig. 1 to 5.

On the one hand, this embodiment provides an adjusting device, and this adjusting device mainly is applied to in the permanent magnet speed regulator realization speed governing function. Generally speaking, the existing permanent magnet speed regulator includes conventional parts such as an input shaft, a permanent magnet rotor, an induction rotor 7, an output shaft 2, a support seat and a housing, and the permanent magnet speed regulator is the prior art and is not regarded as the essential point of the invention, so the structure of the permanent magnet speed regulator is not described again in this embodiment, and the following description of the structure of the permanent magnet speed regulator is merely an exemplary illustration.

The adjusting device of the embodiment is mainly used for adjusting the axial position between the permanent magnet rotor and the induction rotor 7 and changing the magnitude of the coupling magnetic field to realize the rotation speed adjustment of the output shaft 2, and more specifically, the adjusting device is mainly used for driving the induction rotor 7 to axially move to realize the change of the axial position between the permanent magnet rotor and the induction rotor 7.

Specifically, to achieve the above object, the scheme is as follows:

referring to fig. 1, the adjusting device comprises a sliding support 5 and a fixed support 1; the fixed support seat 1 is fixedly provided with a driver 3, the driver 3 comprises a drive shaft 32 moving along the axial direction of the output shaft 2 and a speed regulation structure 31 controlling the moving speed of the drive shaft 32, the sliding support part 5 comprises a sliding connection sleeve 52 slidably sleeved on the output shaft 2 and a sliding support 51 rotatably installed on the sliding connection sleeve 52, the sliding connection sleeve 52 is used for being connected with the induction rotor 7, and the drive shaft 32 drives the sliding connection sleeve 52 to axially slide along the output shaft 2 through the sliding support 51 so as to drive the induction rotor 7 to axially move.

When the adjusting device adjusts the speed, the driving shaft 32 is controlled to axially move by the speed adjusting structure 31 in the driver 3, in this embodiment, the driving shaft 32 axially moves to extend or retract, because the driving shaft 32 is connected with the sliding support 51, the sliding support 51 is installed on the sliding connection sleeve 52, and the sliding connection sleeve 52 is fixedly connected with the induction rotor 7, the driving shaft 32 can transmit the axial force to the induction rotor 7 sequentially through the sliding support 51 and the sliding connection sleeve 52 during the axial movement, so as to drive the induction rotor 7 to axially move, thereby realizing the position adjustment between the induction rotor 7 and the permanent magnet rotor, and achieving the speed adjusting purpose.

In the speed regulation process, the speed regulation structure 31 can regulate the moving speed of the driving shaft 32 according to the actual working condition, for example, the moving speed of the driving shaft 32 can be increased under the working condition that the requirement on speed regulation precision is not high or the speed regulation needs to be greatly performed, so that the purpose of rapid speed regulation is achieved; for example, when fine adjustment of the speed is required, the moving speed of the drive shaft 32 can be appropriately reduced, and the position of the induction rotor 7 and the thrust of the slide support portion 5 can be accurately controlled.

The components that make up the permanent magnet governor adjustment mechanism will be described in detail below with reference to the accompanying drawings.

Wherein, the fixed support seat 1 is a support component of the output shaft 2 and the adjusting device, and is used for providing a support and a mounting position for the output shaft 2 and the adjusting device. And, fixed support seat 1 links to each other with mounting such as the shell of permanent magnet speed regulator, realizes the holistic fixed position of fixed support seat 1.

Referring to fig. 3, the whole fixed support seat 1 is a seat body with a hole in the middle, and the output shaft 2 is installed in the hole in the middle of the fixed support seat 1 through parts such as an angular contact ball bearing, a spacer bush and the like, so that the output shaft 2 is rotationally matched with the fixed support seat 1.

Referring to fig. 1 and 3, a driver 3 is mounted on the fixed support base 1, the driver 3 includes a driving shaft 32 and a speed regulating structure 31 for controlling the moving speed of the driving shaft 32, and the speed regulating structure 31 controls the axial moving direction of the driving shaft 32 to be parallel to the output shaft 2.

In some embodiments, the drive 3 is an electric cylinder, which is a modular product of a servo motor integrated with a lead screw, which converts the rotational motion of the servo motor into a linear motion of the drive shaft 32. The servo motor can be used for realizing the conversion of accurate revolution control, accurate torque control into accurate speed control, accurate position control and accurate thrust control. In this embodiment, FDR065 series electric cylinders from suzhou tordary automation equipment science and technology limited may be used.

The driver 3 formed by the electric cylinder has the advantages of simple structure, small volume, reliable operation, high adjustment precision and good sensitivity, and can set the rotating speed of the servo motor to realize the adjustment of the execution speed of the driving shaft 32 at 0.1-10 mm/s.

Referring to fig. 1, in some embodiments, two drivers 3 are symmetrically arranged relative to the output shaft 2, and the two drivers 3 can balance the thrust force and avoid generating a large tilting moment. It will be appreciated that the number of drives 3 may also be larger, such as 3, 4, 5, etc.

The structure of the slide support portion 5 will be described in detail below.

Referring to fig. 3, in the present embodiment, the sliding support portion 5 specifically includes a sliding connection sleeve 52 and a sliding support 51.

The sliding connection sleeve 52 is an annular member, which is sleeved on the output shaft 2 and is in clearance fit with the output shaft 2, so that the sliding connection sleeve 52 can move along the axial direction of the output shaft 2.

In order to facilitate the connection between the sliding connection sleeve 52 and the induction rotor 7, in this embodiment, a connection disc 53 is disposed on the left side of the sliding connection sleeve 52, the connection disc 53 is fixedly connected to the sliding connection sleeve 52 by welding, bolting, and the like, and the connection disc 53 and the induction rotor 7 are connected and fixed by a connection member 60 such as a connection rod, a connection shaft, and the like, so as to determine the fixed connection relationship between the induction rotor 7 and the sliding connection sleeve 52.

In order to transmit the circumferential rotation of the induction rotor 7 to the output shaft 2, a transmission structure is further arranged between the induction rotor 7 and the output shaft 2, and the structure in the existing permanent magnet speed regulator can be selected. Here, one of them mode of exemplary show, there is interior baffle 59 at the output shaft 2 left end through fastener fixed mounting such as screw, has seted up a plurality of through-holes on the interior baffle 59, and connecting piece 60 sliding fit is in the through-hole for can follow through-hole axial displacement when responding to 7 axial displacement of rotor, and can drive interior baffle 59 through connecting piece 60 and rotate when responding to rotor 7 and rotate, thereby make interior baffle 59 drive output shaft 2 and rotate, realize the moment of torsion transmission between response rotor 7 and the output shaft 2.

The sliding support 51 is rotatably mounted on the sliding connection sleeve 52, and the right side of the sliding support 51 is fixedly connected with the left end of the driving shaft 32, so that the driving shaft 32 can drive the sliding support 51 to axially move.

Referring to fig. 3, in some embodiments, the end of the driving shaft 32 and the sliding support 51 may be connected by a floating joint 33, which may eliminate the deviation between the two sets of electric cylinders and improve the stability of the device.

In some embodiments, a guide mechanism 4 is disposed between the fixed support seat 1 and the sliding support 51, and the guide mechanism 4 guides the axial movement of the sliding support 51, so as to ensure the movement stability and reliability of the sliding support 51.

Referring to fig. 4, in some embodiments, the guiding mechanism 4 includes a guiding column 42 and a guiding cylinder 41, the guiding cylinder 41 is fixedly mounted on the fixed supporting seat 1, the guiding column 42 is in sliding fit with the guiding cylinder 41, and one end of the guiding column 42 is fixedly connected with the sliding support 51.

Specifically, in this embodiment, the guide cylinder 41 is an elongated linear bearing, the left end of which is fixed to the fixed support base 1 by a bolt assembly, and the axis of which is parallel to the axis of the output shaft 2. It should be understood that in some other embodiments, the guide cylinder 41 may also be a copper sleeve, a guide sleeve, or the like.

The left end of the guide post 42 is fixed on the sliding support 51 through a bolt assembly, and the right end of the guide post 42 extends into the guide cylinder 41 and forms sliding fit with the guide cylinder 41.

Based on the above-mentioned guide mechanism 4, in operation, the guide cylinder 41 provides a guide for the guide post 42 to move in the axial direction, thereby providing a guide for the axial movement of the shoe 51.

Referring to fig. 1 and 2, in some embodiments, one guide mechanism 4 is disposed on each of the upper and lower sides of each driver 3, and the guide mechanisms 4 on the upper and lower sides are symmetrically disposed with respect to the driving shaft 32, and the two guide mechanisms 4 disposed adjacent to the drivers 3 can better eliminate the deviation of the moving direction of the driving shaft 32, thereby enhancing the guiding effect on the sliding support 51.

Referring to fig. 1, in some embodiments, a telescopic shield 6 is sleeved on the driving shaft 32, and two ends of the shield 6 are fixedly connected with the fixed support seat 1 and the sliding support 51, respectively.

Referring to fig. 3, in the present embodiment, the shield 6 is an elastic bellows sleeve, two ends of which are fixedly connected to the fixed support 1 and the sliding support 51 through bolt assemblies, respectively, and the exposed portions of the driving shaft 32 and the floating joint 33 between the fixed support 1 and the sliding support 51 are located in the shield 6. In operation, the shield 6 can be extended and retracted with the axial movement of the sliding support 51, so that the drive shaft 32, whether it is extended outwards or retracted inwards, is always under the protection of the shield 6. The protective cover 6 can play dustproof, anticorrosive and antirust roles on the driving shaft 32, and the service stability and the service life of the driving shaft 32 are improved.

In some embodiments, the guiding column 42 is also sleeved with a telescopic shield 6, and two ends of the shield 6 are fixedly connected with the fixed support seat 1 and the sliding support 51 respectively. The shield 6 is identical in structure and function to the shield 6 on the drive shaft 32 and will not be described in detail here.

Referring to fig. 3 and 5, in the present embodiment, the sliding support 51 and the sliding connection sleeve 52 are rotatably engaged by providing a bearing 54, and the rotatable engagement is stable and reliable and is convenient to install. In other alternative embodiments, the sliding support 51 and the sliding connection sleeve 52 may be rotatably engaged by a clearance fit, a bushing connection, a bushing fit, or the like.

Referring to fig. 1, in the present embodiment, two angular contact ball bearings 54 are disposed between the sliding support 51 and the sliding connection sleeve 52, and the two angular contact ball bearings 54 are installed back to back, so that the sliding support 51 can bear the tilting moment caused by the displacement deviation of the two sets of electric cylinders, and the operation stability of the device is improved.

In this embodiment, the sliding support 51 and the sliding connection sleeve 52 are rotationally engaged, so that a circumferential force generated when the sliding connection sleeve 52 rotates along with the sensing rotor 7 is prevented from acting on the sliding support 51, and mutual interference between the movement of the sliding support 51 and the rotation of the sliding connection sleeve 52 is avoided.

Referring to fig. 5, the sliding connection sleeve 52 is further provided with a limiting component, and the limiting component is used for axially positioning the sliding support 51.

In some embodiments, the stop assembly includes a first stop structure fixedly disposed on the sliding connection sleeve 52, a second stop structure detachably connected to the sliding connection sleeve 52, and a locking structure, the sliding support 51 is axially positioned between the first stop structure and the second stop structure, and the locking structure locks the second stop structure on the sliding connection sleeve 52.

Specifically, in this embodiment, the limiting component divides the sliding connection sleeve 52 into three parts from left to right as follows: supporting part, spacing portion and locking portion.

The sliding connection sleeve 52 is a stepped structure with a large left and a small right, so that a step is formed on the outer surface of the sliding connection sleeve 52, the step is the first limit structure, the part of the sliding connection sleeve 52 on the right side of the step is a support part, the support part is used for mounting the bearing 54, and the left side surface of the inner ring of the bearing 54 is abutted against the stepped part during mounting, so that the left limit of the bearing 54 is realized.

The part of the sliding connection sleeve 52 on the right side of the bearing 54 is a limiting part, a spacer ring 55 is sleeved on the limiting part, the spacer ring 55 is the second limiting structure, the inner ring of the bearing 54 is extruded towards the left side by the spacer ring 55 to be tightly abutted against the step, and the right limiting of the bearing 54 is realized.

The part of the sliding connection sleeve 52 on the right side of the spacer ring 55 is a locking part, the outer surface of the locking part is provided with external threads, and is in threaded fit with a locking nut 56, the locking nut 56 is of the locking structure, and the spacer ring 55 is extruded leftwards and locked on the sliding connection sleeve 52 by the locking nut 56, so that the axial limiting of the spacer ring 55 and the bearing 54 is realized.

The bearing 54 is axially positioned on the sliding connection sleeve 52 through the limiting component, and the bearing 54 and the sliding support 51 are axially positioned through the end cover 58 and other parts, so that the axial positioning of the sliding support 51 and the sliding connection sleeve 52 is realized, the sliding support 51 can be pushed and pulled to drive the sliding connection sleeve 52 to axially move, and the transmission of axial force is realized.

Referring to fig. 5, in some embodiments, bearing 54 is provided with bearing isolators 57 on both sides to maintain the bearing 54 in a well-lubricated and non-contaminated condition.

On the other hand, the embodiment also provides a permanent magnet speed regulator, which comprises the permanent magnet speed regulator adjusting device.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that the technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present description should be considered as being described in the present specification.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An adjusting device of a permanent magnet speed regulator, the permanent magnet speed regulator includes induction rotor (7) and output shaft (2), induction rotor (7) drives output shaft (2) rotates, its characterized in that, adjusting device includes:

the device comprises a fixed supporting seat (1), a driver (3) is fixedly mounted on the fixed supporting seat, and the driver (3) comprises a driving shaft (32) moving along the axial direction of the output shaft (2) and a speed regulating structure (31) for controlling the moving speed of the driving shaft (32);

sliding support portion (5), it includes that the slip cap is located slip adapter sleeve (52) on output shaft (2) and rotate install in sliding support (51) on slip adapter sleeve (52), slip adapter sleeve (52) be used for with induction rotor (7) link to each other, drive shaft (32) pass through sliding support (51) drive slip adapter sleeve (52) are followed output shaft (2) endwise slip is in order to drive induction rotor (7) endwise movement.

2. Adjusting device according to claim 1, characterized in that a guiding mechanism (4) is arranged between the stationary support (1) and the sliding support (51), the guiding mechanism (4) providing guidance for the axial sliding of the sliding support (51).

3. The adjusting device according to claim 2, characterized in that the guiding mechanism (4) comprises a guiding column (42) and a guiding cylinder (41), the guiding cylinder (41) is fixedly mounted on the fixed support base (1), the guiding column (42) is fixedly connected with the sliding support (51), and the guiding column (42) is in sliding fit with the guiding cylinder (41).

4. Adjusting device according to claim 3, characterized in that the guide cylinder (41) is a linear bearing.

5. The adjusting device according to claim 3, characterized in that a telescopic protective cover (6) is sleeved on the driving shaft (32), and two ends of the protective cover (6) are fixedly connected with the fixed support seat (1) and the sliding support seat (51) respectively; and/or

The telescopic protective cover (6) is sleeved on the guide column (42), and two ends of the protective cover (6) are respectively fixedly connected with the fixed supporting seat (1) and the sliding support (51).

6. The adjusting apparatus according to claim 3, characterized in that the driver (3) has two and two drivers (3) arranged symmetrically with respect to the output shaft (2); and/or

Two guide mechanisms (4) are symmetrically arranged on two sides of each driver (3).

7. The adjusting apparatus according to claim 1, characterized in that the drive (3) is an electric cylinder.

8. Adjusting device according to claim 1, characterized in that a stop assembly is provided on the sliding connection sleeve (52), which stop assembly axially positions the sliding support (51) on the sliding connection sleeve (52).

9. Adjusting device according to claim 8, characterized in that the limiting assembly comprises a first limiting structure fixedly arranged on the sliding connection sleeve (52), a second limiting structure detachably connected to the sliding connection sleeve (52), and a locking structure, wherein the sliding support (51) is axially positioned between the first limiting structure and the second limiting structure, and the locking structure locks the second limiting structure on the sliding connection sleeve (52).

10. A permanent magnet governor comprising an adjustment device according to any of claims 1-9.

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