Permanent magnet synchronous motor

Abstract

The utility model discloses a permanent magnet synchronous motor, which comprises a shell, a rotating mechanism and a lubricating mechanism, a base is fixed at the lower end of the shell; and a plurality of mounting holes are formed in the base. The rotating mechanism is installed on the shell and comprises a rotating shaft, a rotor is fixed to the rotating shaft, a stator is fixed to the shell, and bearings are installed between the two ends of the rotating shaft and the shell. Sealing pieces are installed on the two sides of the pair of bearings and fixedly connected with the shell. The lubricating mechanisms are installed on the two sides of the shell and comprise a pair of fixing blocks, sleeves are fixed to the fixing blocks, baffles are slidably connected to the side walls of the sleeves, and oil conveying grooves are formed in the pair of fixing blocks. Compared with the prior art, the permanent magnet synchronous motor provided by the utility model can convey lubricating oil into the bearing and reduce the friction force between the rotating shaft and the shell, so that the rotating shaft is not easy to abrade, the energy consumption is reduced, and the operation cost of the permanent magnet synchronous motor is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of permanent magnet synchronous motors, and in particular relates to a permanent magnet synchronous motor. Background Art

[0002] Permanent magnet synchronous motor, referred to as "PMSM", is a motor that works on the principle of electromagnetic induction. The permanent magnet synchronous motor is composed of components such as stator, rotor and end cover. It uses permanent magnets to provide excitation, making the motor structure simpler, reducing processing and assembly costs, and eliminating collector rings and brushes that are prone to problems, improving the reliability of motor operation. Because there is no need for excitation current and no excitation loss, the efficiency and power density of the motor are improved. It has the advantages of small size, simple structure and high power density, and is widely used in position tracking control systems.

[0003] In the prior art, the rotor inside the permanent magnet synchronous motor drives the shaft to rotate, so that the shaft can drive the external load to rotate. However, during the rotation of the shaft, due to the continuous consumption of lubricating oil, the shaft is prone to friction with the shell, thereby increasing the friction between the shaft and the shell, requiring more energy to drive the rotor and the shaft, increasing energy consumption, and increasing the operating cost of the permanent magnet synchronous motor.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a permanent magnet synchronous motor.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a permanent magnet synchronous motor, which can be used to solve the problem that the permanent magnet synchronous motor shaft is prone to wear.

[0007] In order to achieve the above-mentioned object, a specific embodiment of the utility model provides a permanent magnet synchronous motor, including: a housing, a rotating mechanism and a lubricating mechanism;

[0008] The rotating mechanism is installed on the housing, and the rotating mechanism includes a rotating shaft, a rotor is fixed on the rotating shaft, a stator is fixed on the housing, and bearings are installed between both ends of the rotating shaft and the housing;

[0009] The lubrication mechanism is installed on both sides of the shell, and comprises a pair of fixed blocks, a sleeve is fixed on the fixed blocks, a baffle is slidably connected to the side wall of the sleeve, and an oil delivery groove is drilled on the pair of fixed blocks.

[0010] In one or more embodiments of the present invention, a base is fixed to the lower end of the shell, and the base is used to support the shell. A plurality of mounting holes are drilled on the base, and the mounting holes can be used to facilitate fixing the base, thereby fixing the shell.

[0011] In one or more embodiments of the utility model, seals are installed on both sides of a pair of bearings. The seals are fixedly connected to the housing. The seals can seal the rotating shaft, thereby preventing the internal lubricating oil from leaking and preventing external dust from entering the housing.

[0012] In one or more embodiments of the present invention, protective covers are installed on both sides of the shell, and the protective covers are rotatably connected to the rotating shaft. The protective covers are used to protect the fixed block and the gear.

[0013] In one or more embodiments of the present invention, a pair of fixed blocks are provided with gears on one side, the gears can drive the rotating rod to rotate, thereby driving multiple connecting rods to rotate, and both ends of the rotating shaft are fixed with gear teeth that mesh with the gears, and the gear teeth can rotate with the rotating shaft, thereby driving the gears to rotate.

[0014] In one or more embodiments of the utility model, a pair of the gears are rotatably connected with a fixing ring, the fixing ring is fixedly connected to a fixing block, and the fixing ring is used to support the gears and enable the gears to rotate on the fixing ring.

[0015] In one or more embodiments of the utility model, a rotating rod is fixed on each of the pair of gears, the rotating rod is rotatably connected to the fixed block, and the rotating rod is used to support the connecting rod and can drive the connecting rod to rotate.

[0016] In one or more embodiments of the utility model, a plurality of connecting rods are fixed between a pair of the rotating rods and the baffle, the connecting rods are used to connect the baffle and the rotating rods so that the baffle can rotate along with the rotating rods, and a sealing gasket is fixed on a pair of the baffles, the sealing gasket is used to seal the gap between the sleeve and the baffle, so that the lubricating oil is not easily leaked.

[0017] In one or more embodiments of the present invention, a pair of oil pipes are installed at the upper end of the shell, one end of the oil pipe is connected to the sleeve, and lubricating oil can be injected into the sleeve through the oil pipe.

[0018] In one or more embodiments of the utility model, a blocking block is installed at one end of a pair of the oil pipes, and the blocking block is used to seal the oil pipes so that the lubricating oil is not easy to flow out through the oil pipes. A fixing plate is fixed on the blocking block, and the fixing plate is used to support the blocking block.

[0019] Compared with the prior art, the permanent magnet synchronous motor of the utility model can deliver lubricating oil to the inside of the bearing, reduce the friction between the shaft and the housing, thereby making the shaft less prone to wear, reducing energy consumption, and reducing the operating cost of the permanent magnet synchronous motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a cross-sectional view of a permanent magnet synchronous motor in one embodiment of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure shown in FIG.

[0023] Figure 3 for Figure 1 A schematic diagram of the structure shown at B in FIG.

[0024] Figure 4 It is a three-dimensional diagram of a permanent magnet synchronous motor in one embodiment of the utility model.

[0025] Description of main reference numerals:

[0026] 1-housing, 101-base, 102-mounting hole, 2-rotating mechanism, 201-rotating shaft, 202-rotor, 203-stator, 204-bearing, 205-seal, 206-protective cover, 3-lubricating mechanism, 301-fixing block, 302-sleeve, 303-baffle, 304-oil tank, 305-gear, 306-gear teeth, 307-fixing ring, 308-rotating rod, 309-connecting rod, 310-sealing pad, 311-oil pipe, 312-blocking block, 313-fixing plate. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] like Figures 1 to 4 As shown, a permanent magnet synchronous motor in an embodiment of the utility model includes: a housing 1, a rotating mechanism 2 and a lubricating mechanism 3.

[0029] like Figure 4 As shown, the housing 1 is used to support the bearing 204, the rotating shaft 201 and the stator 203. A base 101 is fixed to the lower end of the housing 1, and the base 101 is used to support the housing 1. A plurality of mounting holes 102 are drilled on the base 101, and the mounting holes 102 can be used to fix the base 101, thereby fixing the housing 1.

[0030] like Figure 1 As shown, the rotating mechanism 2 is mounted on the housing 1, and the rotating mechanism 2 includes a rotating shaft 201, which is used to support the rotor 202 and can rotate with the rotor 202. The rotor 202 is fixed on the rotating shaft 201, and the rotor 202 can drive the rotating shaft 201 to rotate.

[0031] like Figure 1 As shown, a stator 203 is fixed on the housing 1, and the stator 203 can drive the rotor 202 to rotate. Bearings 204 are installed between both ends of the rotating shaft 201 and the housing 1, and the bearings 204 are used to support the rotating shaft 201.

[0032] like Figure 1 As shown, a pair of bearings 204 are both provided with seals 205 on both sides, the seals 205 are fixedly connected to the housing 1, and the seals 205 can seal the rotating shaft 201, so that the internal lubricating oil is not easy to leak, and the external dust is not easy to enter the housing 1. Both sides of the housing 1 are provided with protective covers 206, which are rotatably connected to the rotating shaft 201, and are used to protect the fixed block 301 and the gear 305.

[0033] like Figure 1 to Figure 2 As shown, the lubrication mechanism 3 is installed on both sides of the housing 1, and the lubrication mechanism 3 includes a pair of fixed blocks 301, and the fixed blocks 301 are used to support the sleeve 302 and the fixed ring 307. The sleeve 302 is fixed on the fixed block 301, and the inside of the sleeve 302 is used to store lubricating oil.

[0034] like Figure 2 As shown, a baffle 303 is slidably connected to the side wall of the sleeve 302, and the baffle 303 is used to block the opening on the oil delivery groove 304. The sleeve 302 is provided with an opening so that the lubricating oil inside the sleeve 302 can enter the oil delivery groove 304. The pair of fixed blocks 301 are both provided with oil delivery grooves 304, and the oil delivery grooves 304 are used to deliver lubricating oil.

[0035] The opening of the oil delivery groove 304 is relatively small, so that the lubricating oil in the sleeve 302 enters the oil delivery groove 304 at a relatively slow speed, thereby preventing excessive lubricating oil from flowing onto the bearing 204 and preventing the lubricating oil from overflowing.

[0036] like Figure 1 to Figure 2 As shown, a pair of fixed blocks 301 are provided with a gear 305 on one side, and the gear 305 can drive the rotating rod 308 to rotate, thereby driving the multiple connecting rods 309 to rotate. Gear teeth 306 meshing with the gear 305 are fixed at both ends of the rotating shaft 201, and the gear teeth 306 can rotate with the rotating shaft 201, thereby driving the gear 305 to rotate.

[0037] like Figure 2 As shown, a pair of gears 305 are both rotatably connected with a fixing ring 307 , and the fixing ring 307 is fixedly connected to the fixing block 301 . The fixing ring 307 is used to support the gear 305 and enable the gear 305 to rotate on the fixing ring 307 .

[0038] The friction between the gear 305 and the fixing ring 307 is relatively small, so that the gear teeth 306 can use a relatively small force to push the gear 305 to rotate, so that the gear 305 is not likely to increase the force required for the rotation of the shaft 201 .

[0039] like Figure 1 to Figure 2 As shown, a pair of gears 305 are each fixed with a rotating rod 308, the rotating rod 308 is rotatably connected to the fixed block 301, and the rotating rod 308 is used to support the connecting rod 309 and can drive the connecting rod 309 to rotate. A plurality of connecting rods 309 are each fixed between the pair of rotating rods 308 and the baffle 303, and the connecting rods 309 are used to connect the baffle 303 and the rotating rod 308, so that the baffle 303 can rotate with the rotating rod 308.

[0040] like Figures 2 to 3 As shown, a pair of baffles 303 are both fixed with sealing gaskets 310, and the sealing gaskets 310 are used to seal the gap between the sleeve 302 and the baffle 303, so that the lubricating oil is not easy to leak. A pair of oil delivery pipes 311 are installed at the upper end of the housing 1, and one end of the oil delivery pipe 311 is connected to the sleeve 302, and the lubricating oil can be injected into the sleeve 302 through the oil delivery pipe 311.

[0041] like Figure 3 to Figure 4 As shown, a block 312 is installed at one end of a pair of oil delivery pipes 311, and the block 312 is used to block the oil delivery pipe 311, so that the lubricating oil is not easy to flow out through the oil delivery pipe 311. A fixing plate 313 is fixed on the block 312, and the fixing plate 313 is used to support the block 312.

[0042] When in use, lubricating oil is injected into the sleeve 302 through the oil delivery pipe 311, and the oil delivery pipe 311 is blocked by the block 312. The stator 203 can drive the rotor 202 to rotate through magnetic force, and the rotor 202 can drive the rotating shaft 201 to rotate.

[0043] The rotating shaft 201 is used to drive the gear 306 to rotate. The gear 306 can drive the gear 305 to rotate by meshing. The gear 305 can drive the rotating rod 308 to rotate. The rotating rod 308 can drive the connecting rod 309 to rotate, thereby driving the baffle 303 to rotate.

[0044] When the opening on the baffle 303 is aligned with the baffle 303, the lubricating oil inside the sleeve 302 can enter the oil delivery groove 304, so as to lubricate the bearing 204, and the gear 306 can push the gear 305 once every time it rotates the rotating shaft 201, so that the gear 305 is not easy to drive the rotating rod 308 and the baffle 303 to rotate quickly, which can effectively reduce the friction between the rotating shaft 201, the bearing 204 and the housing 1, reduce the wear of the rotating shaft 201, thereby reducing the energy required to drive the rotating shaft 201 to rotate, and saving energy.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A permanent magnet synchronous motor, characterized in that: include: case; A rotating mechanism is installed on the housing, the rotating mechanism comprises a rotating shaft, a rotor is fixed on the rotating shaft, a stator is fixed on the housing, and bearings are installed between both ends of the rotating shaft and the housing; The lubrication mechanism is installed on both sides of the shell, and the lubrication mechanism includes a pair of fixed blocks, a sleeve is fixed on the fixed blocks, a baffle is slidably connected to the side wall of the sleeve, and an oil delivery groove is drilled on the pair of fixed blocks.

2. A permanent magnet synchronous motor according to claim 1, characterized in that: A base is fixed at the lower end of the shell, and a plurality of mounting holes are drilled on the base.

3. A permanent magnet synchronous motor according to claim 1, characterized in that: Seals are installed on both sides of a pair of bearings, and the seals are fixedly connected to the housing.

4. A permanent magnet synchronous motor according to claim 1, characterized in that: Protective covers are installed on both sides of the shell, and the protective covers are rotatably connected to the rotating shaft.

5. A permanent magnet synchronous motor according to claim 1, characterized in that: One side of a pair of the fixing blocks is provided with a gear, and both ends of the rotating shaft are fixed with gear teeth meshing with the gear.

6. A permanent magnet synchronous motor according to claim 5, characterized in that: A pair of the gears are both rotatably connected with a fixing ring, and the fixing ring is fixedly connected to a fixing block.

7. A permanent magnet synchronous motor according to claim 5, characterized in that: A rotating rod is fixed on each of the pair of gears, and the rotating rod is rotationally connected to the fixed block.

8. A permanent magnet synchronous motor according to claim 7, characterized in that: A plurality of connecting rods are fixed between the pair of rotating rods and the baffles, and a sealing pad is fixed on the pair of baffles.

9. A permanent magnet synchronous motor according to claim 1, characterized in that: A pair of oil delivery pipes are installed at the upper end of the shell, and one end of the oil delivery pipe is connected with the sleeve.

10. A permanent magnet synchronous motor according to claim 9, characterized in that: A blocking block is installed at one end of a pair of oil delivery pipes, and a fixing plate is fixed on the blocking block.

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