A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors

Abstract

This utility model relates to the field of motor equipment technology, and in particular to a quick-installation direct-drive permanent magnet synchronous motor for belt conveyors. It includes a rotor detachably connected to the output shaft of the belt conveyor's drive roller, a stator located outside the rotor, an inner end cover fixed to the stator's end closest to the belt conveyor and having a through hole in the middle to facilitate rotor passage, an outer end cover fixed to the other end of the stator, a motor controller located outside the stator, and a connecting assembly connecting the belt conveyor's side plate and the inner end cover. The rotor includes a locking sleeve fitted onto the output shaft of the drive roller, a locking nut located at the end of the locking sleeve furthest from the belt conveyor, a hollow shaft fitted outside the locking sleeve, and a permanent magnet fitted outside the hollow shaft. This utility model has advantages such as simple structure, eliminating the need for a reducer, improving transfer efficiency, reducing equipment operating noise, and effectively preventing the risk of contaminating conveyed materials due to reducer oil leakage.

Description

Technical Field

[0001] This utility model relates to the field of motor equipment technology, and in particular to a quick-installation direct-drive permanent magnet synchronous motor for belt conveyors. Background Technology

[0002] A permanent magnet synchronous motor (PMSM) is a synchronous motor that uses permanent magnets to generate a magnetic field. The rotor's speed is synchronized with the current frequency of the stator windings. The working principle of a PMSM is based on the interaction between the rotating magnetic field generated by the stator and the magnetic field generated by the permanent magnets on the rotor. Pre-magnetized permanent magnets are installed on the rotor; these magnets generate a strong magnetic field when rotating, thus providing greater output torque. The motor's control system precisely regulates the current to ensure that the motor rotor rotates synchronously with the rotating magnetic field, maintaining stable operation. PMSMs are a widely used type of motor, offering advantages such as high efficiency, good dynamic response, and low noise. They are used in material handling in industries such as electric vehicles, robotics, and food, as well as other fields requiring high efficiency, high dynamic performance, and low noise. Belt conveyors in the food industry are typically driven by a drive structure consisting of a three-phase asynchronous motor and a reducer. However, the reducer is prone to oil leakage, posing a significant safety hazard to food processing and production, and requires improvement. Utility Model Content

[0003] The features and advantages of this invention are set forth in part in the description which follows, or may be apparent from the description, or may be learned by practice of this invention.

[0004] To overcome the problems of the existing technology, the purpose of this utility model is to provide a fast-installation direct-drive permanent magnet synchronous motor for belt conveyors.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors includes a rotor detachably connected to the output shaft of the drive roller of the belt conveyor, a stator located outside the rotor, an inner end cover fixed to the end of the stator near the belt conveyor and having a through hole in the middle to facilitate rotor passage, an outer end cover fixed to the other end of the stator, a motor controller located outside the stator, and a connecting assembly connecting the side plate of the belt conveyor and the inner end cover; the rotor includes a locking sleeve sleeved on the output shaft of the drive roller, a locking nut located at the end of the locking sleeve away from the belt conveyor, a hollow shaft sleeved outside the locking sleeve, and a permanent magnet sleeved outside the hollow shaft.

[0007] Preferably, the locking sleeve includes an inner sleeve with a conical outer shape and an outer sleeve fitted over the inner sleeve.

[0008] Preferably, the output shaft of the drive roller is provided with a first keyway, and the inner sleeve is provided with a second keyway that matches the first keyway on the shaft; the first keyway and the second keyway are connected by a flat key.

[0009] Preferably, the inner sleeve and the outer sleeve form an interference fit under the action of the locking nut.

[0010] Preferably, the outer sleeve has an inner conical hole that matches the conical profile of the inner sleeve.

[0011] Preferably, the inner sleeve and the outer sleeve are provided with through grooves along the axial direction on their circumferences.

[0012] Preferably, the inner sleeve has a boss at the end near the belt conveyor that is connected to the hollow shaft.

[0013] Preferably, the belt conveyor is provided with a support sleeved on the outside of the output shaft of the drive roller, and the center of the support is provided with a first bearing sleeved on the output shaft of the drive roller.

[0014] Preferably, the connecting assembly includes a fan-shaped torque plate detachably connected to the inner end cover, a first ear seat connected to the torque plate and in a Z-shape, and a second ear seat connected to the first ear seat and in a C-shape; both the first ear seat and the second ear seat are connected to the side plate.

[0015] The beneficial effects of this utility model are as follows: This application completely changes the original drive structure of belt conveyors, which requires a three-phase asynchronous motor and a reducer. It adopts a direct-drive permanent magnet synchronous motor with a hollow shaft and locking sleeve structure for direct drive. The structure is simple, the reducer is eliminated, the transfer efficiency is improved, the equipment operating noise is reduced, the equipment maintenance cost is reduced, and the risk of contamination of conveyed materials due to oil leakage from the reducer is effectively prevented. It has many advantages, such as high promotion value. Attached Figure Description

[0016] The present invention will be described in detail below with reference to the accompanying drawings and examples. The advantages and implementation methods of the present invention will become more apparent then. The contents shown in the accompanying drawings are for illustrative purposes only and do not constitute any limitation on the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of a quick-installation direct-drive permanent magnet synchronous motor for a belt conveyor, as described in a specific embodiment of this utility model.

[0018] Figure 2 This is an exploded view of a direct-drive permanent magnet synchronous motor for a belt conveyor that can be installed quickly, according to a specific embodiment of this utility model.

[0019] Figure 3This is a cross-sectional schematic diagram of a direct-drive permanent magnet synchronous motor for a belt conveyor that can be installed quickly, according to a specific embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of a locking sleeve for a direct-drive permanent magnet synchronous motor for a belt conveyor that can be installed quickly, according to a specific embodiment of this utility model. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "inner," "outer," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Specific Implementation Example 1

[0025] like Figures 1 to 3As shown, this utility model provides a quick-installation direct-drive permanent magnet synchronous motor for a belt conveyor 1, including a rotor 200 detachably connected to the output shaft 100 of the drive roller of the belt conveyor 1, a stator 300 located outside the rotor 200, an inner end cover 310 fixed to the end of the stator 300 near the belt conveyor 1 and having a through hole in the middle to facilitate the passage of the rotor 200, an outer end cover 320 fixed to the other end of the stator 300, a motor controller 400 located outside the stator 300, and a connecting assembly 500 connecting the side plate 2 of the belt conveyor 1 and the inner end cover 310; the stator 300 is detachably connected to the inner end cover 310 and the outer end cover 320 by bolts. The rotor 200 includes a locking sleeve 210 sleeved on the output shaft 100 of the drive roller, a locking nut 220 located at the end of the locking sleeve 210 away from the belt conveyor 1, a hollow shaft 230 sleeved outside the locking sleeve 210, and a permanent magnet 240 sleeved outside the hollow shaft 230. Figure 4As shown, the locking sleeve 210 includes an inner sleeve 211 with a conical outer shape and an outer sleeve 212 fitted over the inner sleeve 211. The large-diameter end of the inner sleeve 211 is closer to the belt conveyor 1. The outer wall of the small-diameter end of the inner sleeve 211 has external threads, and the inner wall of the locking nut 220 has internal threads that match the external threads on the inner sleeve 211. The locking nut 220 has a hexagonal hole in its center, which can be tightened or loosened using an Allen wrench. A screw 221, adapted to the hexagonal hole, is provided in the hexagonal hole. The screw 221 passes through the locking nut 220 and connects to the end of the drive roller output shaft 100, the end of which has a threaded hole. When the locking nut 220 is tightened, the outer sleeve 212 expands radially under the action of the inner sleeve 211 when the drive roller output shaft 100 rotates at high speed, thereby achieving the locking function of the locking sleeve 210. The drive roller output shaft 100 is provided with a first keyway 110, and the inner sleeve 211 is provided with a second keyway that matches the first keyway 110 on the shaft. The first keyway 110 and the second keyway are connected by a flat key 120, thereby realizing a detachable connection between the drive roller output shaft 100 and the rotor 200. The inner sleeve 211 and the outer sleeve 212 form an interference fit under the action of the locking nut 220. The outer sleeve 212 is provided with an inner conical hole 213 that matches the conical profile of the inner sleeve 211. The small diameter end of the inner conical hole 213 is close to the locking nut 220. The inner sleeve 211 and the outer sleeve 212 are provided with through grooves 215 along the axial direction on their circumferences. The motor controller 400 is prior art, and the preferred model is ZQ-K15A. The outer end cover 320 is provided with a pressure cap 330. The pressure cap 330 and the outer end cover 320 can be detachably connected by bolts or fixedly connected by riveting, which is not specifically limited here. The inner diameter of the locking nut 220 is adapted to the small diameter end of the inner sleeve 211. At least one second bearing 250 is sleeved on the outside of the hollow shaft 230. Preferably, there are two second bearings 250 in this embodiment. A wave washer 260 for adjusting the axial clearance is provided between the second bearing 250 and the inner end cover 310.

[0026] Furthermore, the inner sleeve 211 is provided with a boss 216 connected to the hollow shaft 230 at the end near the belt conveyor 1.

[0027] Furthermore, the belt conveyor 1 is provided with a support 3 sleeved on the outside of the drive roller output shaft 100, and the support 3 is provided with a first bearing 4 sleeved on the drive roller output shaft 100 at its center; the first bearing 4 is a UC bearing, and a square seat 5 is provided on the outside of the first bearing 4; the locking sleeve is sleeved on the shoulder of the first bearing 4, and the shoulder is axially positioned with the locking sleeve 210.

[0028] Further, the connecting assembly 500 includes a fan-shaped torque disk 510 detachably connected to the inner end cover 310, a Z-shaped first lug 520 connected to the torque disk 510, and a C-shaped second lug 530 connected to the first lug 520. Both the first lug 520 and the second lug 530 are connected to the side plate 2. One end of the second lug 530 is also connected to the torque disk 510. Bolt holes are provided at corresponding positions on the inner end cover 310 and the torque disk 510, and the inner end cover 310 and the torque disk 510 are connected by bolts. Preferably, both the first lug 520 and the second lug 530 are connected to the torque disk 510 by bolts. After the first lug 520 and the second lug 530 are fixed with bolts, they are then fixed to the side plate 2 of the belt conveyor 1 with bolts. The number of connecting components 500 can be one or more, and can be installed according to actual needs. The corresponding number of bolt holes on the inner end cover 310 can be used to connect the two by bolts, and no specific limitation is made here.

[0029] Furthermore, the inner end cover 310 is provided with at least two fixing lugs on its outer edge, and each fixing lug is provided with at least one bolt hole, thereby realizing the connection between the stator 300 and the inner end cover 310, as well as the connection between the torque disk 510 and the inner end cover 310. The number of bolt holes can be set according to the actual connection and fixing needs to facilitate the connection.

[0030] In summary, the above-described quick-installation belt conveyor 1 direct-drive permanent magnet synchronous motor uses a direct-drive permanent magnet synchronous motor with a hollow shaft and locking sleeve 210 structure to directly drive the conveyor, eliminating the need for a reducer. This improves transfer efficiency, reduces equipment operating noise, reduces equipment maintenance costs, and effectively prevents the risk of contaminating conveyed materials due to reducer oil leakage. It has many advantages and is highly valuable for promotion.

[0031] The preferred embodiments of this utility model have been described above with reference to the accompanying drawings. Parts not described herein employ existing technology, and those skilled in the art can implement this utility model in various modifications without departing from its scope and essence. For example, a feature shown or described in one embodiment can be used in another embodiment to obtain yet another embodiment. The above are merely preferred embodiments of this utility model and do not limit the scope of this utility model. All equivalent changes made based on the content of this utility model specification and drawings are included within the scope of this utility model.

Claims

1. A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors, characterized in that, The device includes a rotor detachably connected to the output shaft of the drive roller of a belt conveyor, a stator located outside the rotor, an inner end cover fixed to the end of the stator near the belt conveyor and having a through hole in the middle to facilitate rotor passage, an outer end cover fixed to the other end of the stator, a motor controller located outside the stator, and a connecting assembly connecting the side plate of the belt conveyor and the inner end cover; the rotor includes a locking sleeve sleeved on the output shaft of the drive roller, a locking nut located at the end of the locking sleeve away from the belt conveyor, a hollow shaft sleeved outside the locking sleeve, and a permanent magnet sleeved outside the hollow shaft.

2. The quick-installation direct-drive permanent magnet synchronous motor for belt conveyors according to claim 1, characterized in that, The locking sleeve includes an inner sleeve with a conical outer shape and an outer sleeve fitted over the inner sleeve.

3. A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors according to claim 2, characterized in that, The output shaft of the drive roller is provided with a first keyway, and the inner sleeve is provided with a second keyway that matches the first keyway on the shaft; the first keyway and the second keyway are connected by a flat key.

4. A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors according to claim 2, characterized in that, The inner sleeve and the outer sleeve form an interference fit under the action of the locking nut.

5. A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors according to claim 2, characterized in that, The outer sleeve has an inner conical hole that matches the conical profile of the inner sleeve.

6. A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors according to claim 2, characterized in that, The inner and outer sleeves are provided with through grooves along the axial direction on their circumferences.

7. A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors according to claim 2, characterized in that, The inner sleeve has a boss at the end near the belt conveyor that is connected to the hollow shaft.

8. A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors according to claim 2, characterized in that, The belt conveyor is provided with a support sleeved on the outside of the output shaft of the drive roller, and a first bearing sleeved on the output shaft of the drive roller is provided at the center of the support.

9. A quick-installation direct-drive permanent magnet synchronous motor for belt conveyors according to any one of claims 1-8, characterized in that, The connecting assembly includes a fan-shaped torque plate detachably connected to the inner end cover, a first ear seat connected to the torque plate and in a Z-shape, and a second ear seat connected to the first ear seat and in a C-shape; both the first ear seat and the second ear seat are connected to the side plate.

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