CN216959593U

CN216959593U - Position sensor-free permanent magnet synchronous motor direct-drive device

Info

Publication number: CN216959593U
Application number: CN202220766829.2U
Authority: CN
Inventors: 吕德刚; 范超越
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-07-12
Anticipated expiration: 2032-04-06

Abstract

The utility model provides a position sensor-free permanent magnet synchronous motor direct-drive device, which relates to the technical field of synchronous motors and comprises a synchronous motor, wherein the top of the synchronous motor is provided with a mounting shell, a clamping mechanism is arranged in the mounting shell, the clamping mechanism comprises two mounting rings connected with the outer side of the mounting shell, and sliding rods are arranged in the two mounting rings in a sliding manner. According to the utility model, the synchronous motor main body and the direct-drive box can be installed through the clamping mechanism, the synchronous motor main body and the direct-drive box with faults can be conveniently replaced and installed, the maintenance time is saved, after the synchronous motor main body and the direct-drive box are installed, the threaded rod is in threaded connection with the threaded shell, the rotating block is close to the top of the direct-drive box, the bottom of the second spring is pressed on the top of the direct-drive box, the effect of further fixing the direct-drive box is achieved, and the synchronous motor main body is prevented from vibrating when working.

Description

Position sensor-free permanent magnet synchronous motor direct-drive device

Technical Field

The utility model relates to the technical field of synchronous motors, in particular to a direct drive device of a permanent magnet synchronous motor without a position sensor.

Background

The direct drive device of the permanent magnet synchronous motor without the position sensor is an alternating current motor which generates torque by the interaction of an excitation magnetic field supplied by direct current and a rotating magnetic field of an armature and rotates at synchronous rotating speed, the direct drive device of the synchronous motor is already mature in the prior art, and has the following application numbers: 201320650883.1 entitled "position sensorless permanent magnet synchronous motor direct drive device".

However, in the prior art, when the existing direct-drive device is used, the whole structure is generally installed on a set installation structure of the synchronous motor, the connection between the other synchronous motors is generally an integrated structure, when the synchronous motor is damaged, the direct-drive device can only be replaced together with the synchronous motor, so that the resource waste is caused, and when the direct-drive device is damaged, the direct-drive device can only be detached together with the synchronous motor for maintenance, so that delay is caused on the use and operation of the synchronous motor, and the direct-drive device is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, when a synchronous motor is damaged, only the direct-drive device can be replaced together, so that the resource waste is caused, and when the direct-drive device is damaged, only the direct-drive device can be detached together with the synchronous motor for maintenance, so that the use and the operation of the synchronous motor are delayed, and the synchronous motor is very inconvenient.

In order to achieve the purpose, the utility model adopts the following technical scheme: a position sensor-free permanent magnet synchronous motor direct-drive device comprises a synchronous motor, wherein a mounting shell is arranged at the top of the synchronous motor, a clamping mechanism is arranged inside the mounting shell, the clamping mechanism comprises mounting rings connected with the outer side of the mounting shell, the number of the mounting rings is two, slide rods are slidably mounted inside the two mounting rings, two round holes are formed in the outer side of the mounting shell in a penetrating manner, the inner walls of the two round holes are slidably connected with the outer sides of the slide rods, pull blocks are mounted at one ends of the two slide rods, first springs are mounted on one sides of the two pull blocks close to the mounting rings, the other sides of the two first springs are connected with the outer sides of the mounting rings, clamping strips are arranged at the other ends of the two slide rods, two clamping grooves are formed in the inner wall of the mounting shell, the inner walls of the two clamping grooves are matched with the outer sides of the clamping strips, and an arc-shaped plate is clamped at one opposite side of the two clamping strips, the wire standing groove has been seted up to the inside of installation shell.

In a preferred embodiment, a direct drive is connected between opposite sides of the two arcuate plates.

The technical effect of adopting the further scheme is as follows: the arc-shaped plate is made of metal and has certain elasticity.

In a preferred embodiment, a cooling fin is mounted on the outer side of the direct driver.

The technical effect of adopting the further scheme is as follows: the heat sink may dissipate heat for the direct driver.

As a preferred embodiment, the mounting shell is provided with two mounting plates on the outer side, and the top parts of the two mounting plates are provided with the threaded shells.

The technical effect of adopting the further scheme is as follows: the screw thread that the inside was seted up of screw shell can be with the screw thread looks adaptation on the threaded rod.

In a preferred embodiment, a threaded rod is screwed into the interior of both threaded shells.

The technical effect of adopting the further scheme is as follows: the threaded rod may rotate inside the threaded shell.

As a preferred embodiment, the tops of the two threaded rods are movably provided with rotating blocks, and the bottoms of the two rotating blocks are provided with second springs.

The technical effect of adopting the further scheme is as follows: the rotating block is rotatably connected with the threaded rod, and when the threaded rod rotates, a connecting point between the rotating block and the top of the direct driver cannot move.

Compared with the prior art, the utility model has the advantages and positive effects that,

according to the utility model, the synchronous motor main body and the direct-drive box can be installed through the clamping mechanism, the synchronous motor main body and the direct-drive box with faults can be conveniently replaced and installed, the maintenance time is saved, after the synchronous motor main body and the direct-drive box are installed, the threaded rod is in threaded connection with the threaded shell, the rotating block is close to the top of the direct-drive box, the bottom of the second spring is pressed on the top of the direct-drive box, the effect of further fixing the direct-drive box is achieved, the synchronous motor main body is prevented from vibrating when working, the synchronous motor main body is separated from the direct-drive box, and the radiating fins arranged on the outer side of the direct-drive box can achieve the effect of radiating the direct-drive box; meanwhile, the clamping mechanism on the mounting shell designed by the utility model can directly clamp the direct driver when the direct driver is placed in the mounting shell, and similarly, when a user pulls the clamping mechanism open, the direct driver can be quickly detached, so that maintenance personnel can conveniently maintain the direct driver mounting device, a synchronous motor is not required to be detached, and a new direct driver can be mounted for continuous use only after the direct driver needing to be maintained is detached, so that the practicability of the direct driver mounting device is further improved.

Drawings

Fig. 1 is a schematic front view of a direct drive device of a position-sensorless permanent magnet synchronous motor according to the present invention;

FIG. 2 is a schematic structural view of a mounting shell of a direct drive device of a position-sensorless permanent magnet synchronous motor according to the present invention;

FIG. 3 is a schematic structural view of a fastening strip of a direct drive device of a position sensorless permanent magnet synchronous motor according to the present invention;

fig. 4 is a schematic structural view of a threaded rod of a position sensor-free permanent magnet synchronous motor direct drive device provided by the utility model.

Illustration of the drawings:

1. a synchronous motor; 2. mounting a shell; 3. a clamping mechanism; 4. a direct drive; 5. an arc-shaped plate; 6. a heat sink; 7. mounting a plate; 8. a threaded shell; 9. a threaded rod; 10. rotating the block; 11. a second spring;

31. a mounting ring; 32. a slide bar; 33. a first spring; 34. pulling the block; 35. clamping the strip; 36. a card slot; 37. wire standing groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1 to 4, the present invention provides a technical solution: a permanent magnet synchronous motor direct-drive device without a position sensor comprises a synchronous motor 1, wherein the top of the synchronous motor 1 is provided with a mounting shell 2, the inside of the mounting shell 2 is provided with a clamping mechanism 3, the clamping mechanism 3 can realize the mounting of the synchronous motor 1 and a direct driver 4, and is convenient for replacing and mounting some faulty synchronous motors 1 and direct drivers 4, the clamping mechanism 3 comprises mounting rings 31 connected with the outer sides of the mounting shell 2, the number of the mounting rings 31 is two, slide bars 32 are slidably mounted inside the two mounting rings 31, the outer sides of the mounting shell 2 are provided with two circular holes, the inner walls of the two circular holes are slidably connected with the outer sides of the slide bars 32, one ends of the two slide bars 32 are provided with pull blocks 34, one sides of the two pull blocks 34, which are close to the mounting rings 31, are provided with first springs 33, and the other sides of the two first springs 33 are connected with the outer sides of the mounting rings 31, the other end of two slide bars 32 all is provided with block strip 35, two draw-in grooves 36 have been seted up to the inner wall of installing shell 2, the inner wall of two draw-in grooves 36 and the outside looks adaptation of block strip 35, will draw the pulling of piece 34, make slide bar 32 slide in the inside of collar 31, make first spring 33 shrink, shrink block strip 35 to the inside of draw-in groove 36, for directly driving 4 entering installing shell 2 of ware and providing installation space, the relative one side block of two block strips 35 is connected with arc 5, wire standing groove 37 has been seted up to the inside of installing shell 2.

Example 2

As shown in fig. 3 and 4, be connected with between the relative one side of two arcs 5 and directly drive ware 4, fin 6 is installed in the outside of directly driving ware 4, mounting panel 7 is installed in the outside of mounting panel 2, the quantity of mounting panel 7 is two, screw shell 8 is all installed at the top of two mounting panels 7, the equal threaded connection in inside of two screw shells 8 has threaded rod 9, the equal movable mounting in top of two threaded rod 9 has rotatory piece 10, second spring 11 is all installed to the bottom of two rotatory pieces 10, with threaded connection between threaded rod 9 and the screw shell 8, make threaded rod 9 ann insert the inside of screw shell 8, make rotatory piece 10 press close to the top of directly driving ware 4, second spring 11 bottom is pressed down at the top of directly driving ware 4, play the effect of further fixed directly driving ware 4.

The working principle is as follows:

as shown in fig. 1-4, the clamping mechanism 3 in the device can realize the installation of the synchronous motor 1 and the direct driver 4, which is convenient for the replacement and installation of some faulty synchronous motors 1 and direct drivers 4, and saves the maintenance time, when in installation, the pulling block 34 is pulled firstly, so that the sliding rod 32 slides in the installation ring 31, the first spring 33 is contracted, the clamping strip 35 is contracted to the inside of the clamping groove 36, an installation space is provided for the direct driver 4 to enter the installation shell 2, when the direct driver 4 is placed in the installation shell 2, the lead wire of the direct driver 4 is connected with the lead wire of the synchronous motor 1, the lead wire is placed in the lead wire placing groove 37, so that the synchronous motor 1 can be normally used, when the synchronous motor 1 and the direct driver 4 are installed, the threaded rod 9 can be connected with the threaded shell 8 through threads, the threaded rod 9 is inserted into the threaded shell 8, the rotating block 10 is close to the top of the direct driver 4, the bottom of the second spring 11 is pressed at the top of the direct driver 4, the effect of further fixing the direct driver 4 is achieved, vibration is prevented from being generated when the synchronous motor 1 works, the synchronous motor 1 and the direct driver 4 are separated, and the radiating fins 6 arranged on the outer side of the direct driver 4 can achieve the effect of radiating the direct driver 4.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes by using the technical contents disclosed in the above description to other fields, but any simple modification, equivalent change and change made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a no position sensor permanent magnet synchronous motor directly drives device, includes synchronous motor (1), its characterized in that: the synchronous motor is characterized in that a mounting shell (2) is arranged at the top of the synchronous motor (1), a clamping mechanism (3) is arranged inside the mounting shell (2), the clamping mechanism (3) comprises mounting rings (31) connected with the outer side of the mounting shell (2), the number of the mounting rings (31) is two, sliding rods (32) are arranged inside the two mounting rings (31) in a sliding mode, two round holes are formed in the outer side of the mounting shell (2) in a penetrating mode, the inner walls of the two round holes are connected with the outer sides of the sliding rods (32) in a sliding mode, pull blocks (34) are arranged at one ends of the two sliding rods (32), first springs (33) are arranged on one sides, close to the mounting rings (31), of the two pull blocks (34), the other sides of the two first springs (33) are connected with the outer sides of the mounting rings (31), clamping strips (35) are arranged at the other ends of the two sliding rods (32), two clamping grooves (36) are formed in the inner wall of the mounting shell (2), the inner wall of each clamping groove (36) is matched with the outer side of each clamping strip (35), an arc-shaped plate (5) is connected to one side, opposite to each clamping strip (35), of each clamping strip, and a wire placing groove (37) is formed in the mounting shell (2).

2. The position sensorless permanent magnet synchronous motor direct drive device according to claim 1, characterized in that: a direct driver (4) is connected between the opposite sides of the two arc-shaped plates (5).

3. The position sensorless permanent magnet synchronous motor direct drive device according to claim 2, characterized in that: and a cooling fin (6) is arranged on the outer side of the direct driver (4).

4. The position sensorless permanent magnet synchronous motor direct drive device according to claim 1, characterized in that: mounting panel (7) are installed in the outside of installation shell (2), the quantity of mounting panel (7) is two, two threaded shell (8) are all installed at the top of mounting panel (7).

5. The direct drive device of the position sensorless permanent magnet synchronous motor according to claim 4, characterized in that: the inner parts of the two threaded shells (8) are all connected with threaded rods (9) in a threaded manner.

6. The direct drive device of the position sensorless permanent magnet synchronous motor according to claim 5, characterized in that: the top of two threaded rod (9) all movable mounting have rotatory piece (10), two second spring (11) are all installed to the bottom of rotatory piece (10).