Electromagnetic braking low-speed permanent magnet synchronous motor convenient to disassemble and maintain

Abstract

The utility model relates to an electromagnetic braking low-speed permanent magnet synchronous motor convenient to disassemble and maintain, which relates to the technical field of motors, and comprises a seat body, end covers coaxially buckled on two end parts of the seat body, and a protective cover coaxially mounted at one end, far away from the seat body, of one end cover, a plurality of connecting rods are vertically arranged on the end faces, close to each other, of the two end covers, the connecting rods are evenly distributed in the circumferential direction, every two connecting rods which are coaxially aligned form a group, and a plurality of groups of positioning assemblies for positioning the two connecting rods in the same group are arranged at the circumferential side end of the seat body. The motor has the beneficial effect that the motor is more convenient to disassemble and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of electric motors, in particular to an electromagnetic braking low-speed permanent magnet synchronous motor which is easy to disassemble and repair. Background Art

[0002] Motor is a device that converts electrical energy into mechanical energy. It uses an energized coil (i.e. stator winding) to generate a rotating magnetic field and acts on the rotor (such as a squirrel cage closed aluminum frame) to form a magnetic electromotive force rotation torque. Motors are divided into DC motors and AC motors according to the power supply used.

[0003] The electric motor includes a base, a stator and a rotor. The base includes a base body located in the middle and end covers installed at both ends. The stator and the rotor are installed in the base body. The two ends of the motor shaft rotate and pass through the two end covers respectively. One end is a transmission shaft, and the other end will be connected to a fan for heat dissipation inside the motor. At the same time, a protective cover will be installed on the end cover at the end where the fan is installed. When repairing the motor, it is necessary to remove the protective cover first, and then remove the end covers at both ends respectively. The whole process requires the removal of bolts of different sizes, which is very troublesome. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides an electromagnetic braking low-speed permanent magnet synchronous motor which is easy to disassemble and repair, and solves the technical problem that disassembly is troublesome during the repair of the motor.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] An embodiment of the utility model provides an electromagnetic braking low-speed permanent magnet synchronous motor which is easy to disassemble and maintain, comprising a base body, end covers coaxially buckled on both ends of the base body, and a protective cover coaxially installed on one end cover away from one end of the base body, a plurality of connecting rods are vertically arranged on one end surface of the two end covers close to each other, the plurality of connecting rods are evenly arranged circumferentially, and two coaxially aligned connecting rods form a group, and a plurality of positioning components for positioning the two connecting rods in the same group are arranged on the circumferential side ends of the base body.

[0009] The utility model embodiment proposes an electromagnetic braking low-speed permanent magnet synchronous motor which is easy to disassemble and repair. When installing the motor, the stator and rotor of the motor are respectively installed inside the seat body, and then the two end covers are respectively aligned with the two ends of the seat body, so that the output shaft of the motor passes through the two end covers respectively. At this time, the connecting rods on the two end covers are aligned one by one, and then the aligned connecting rods are connected and fixed by the positioning assembly. At this time, the installation of the two end covers is completed, and finally the fan is installed to one end of the output shaft and the protective cover is installed. Similarly, when disassembling, it is only necessary to open the positioning assembly to remove the two end covers for maintenance. This scheme makes the disassembly of the motor more convenient.

[0010] Optionally, a positioning plate is provided at one end of the connecting rod away from the end cover, and the positioning plates on the connecting rods of the same group abut against each other when the end cover is installed. The positioning assembly includes two positioning blocks which are vertically arranged on the side ends of the seat body and slide toward each other along the circumference of the seat body. A section of the surface where the two positioning blocks slide and abut against each other and are close to each other is provided with a positioning groove for inserting the positioning plate and part of the connecting rod.

[0011] When the end covers are positioned at both ends of the seat body, the positioning pieces on the same group of connecting rods abut against each other. At this time, the corresponding two positioning blocks are directly slid. At this time, the positioning grooves on the two positioning blocks are merged and the two positioning pieces are limited in the positioning grooves. At this time, the axial movement of the connecting rod will be limited, thereby completing the fixation of the two end covers. This solution makes the installation and disassembly of the end covers more convenient.

[0012] Optionally, a sliding groove for the positioning blocks to slide is formed at a side end of the seat body, and a compression spring for pushing the positioning blocks of the same group to abut against each other is embedded in the sliding groove of the seat body.

[0013] By opening a slide groove on the seat body, the positioning block can slide along the slide groove, and a compression spring is embedded in the slide groove, so that the compression spring pushes the two positioning blocks to move towards each other and abut against each other. When the motor is working, the compression spring can still push the positioning block to fix the positioning piece, thereby making the end cover more stably fixed.

[0014] Optionally, the slide groove is a "T"-shaped groove, and the slide grooves of the two positioning blocks that are slidably inserted into the same group are connected to each other. The side end of the seat body is provided with an installation slot for the positioning block to be placed in the middle of the two connected slide grooves.

[0015] The sliding grooves of two positioning blocks in the same group are connected and an installation slot is provided in the middle, so that the installation of the positioning blocks is facilitated.

[0016] Optionally, the positioning assembly further comprises a positioning sleeve, and the positioning sleeve is provided with a positioning slot for inserting and engaging two mutually abutting positioning blocks at one end away from the base body.

[0017] When the two positioning blocks are butted together, the two positioning blocks can be completely fixed by installing a clamping positioning sleeve to prevent the two positioning blocks from being disengaged due to vibration generated when the motor is working, thereby making the end cover more firmly fixed.

[0018] Optionally, a separation groove is formed at one end of the positioning block away from the seat body along the extension direction of the seat body, and two parallel side walls of the positioning sleeve are respectively inserted into the separation grooves of the positioning blocks in the same group to separate the positioning blocks in the same group.

[0019] By providing a positioning slot at the end of the positioning block away from the seat body, when installing the end cover, the two positioning blocks can be separated in a direction away from each other, and then the two side walls of the positioning sleeve are respectively inserted into the positioning slots. At this time, the end cover can be directly installed so that the axially aligned positioning pieces can abut against each other between the two positioning blocks, thereby facilitating the installation of the end cover.

[0020] Optionally, a connecting column is vertically arranged between two adjacent connecting rods installed on the same end cover.

[0021] When the end cover is installed, the connection between the end cover and the base body is relatively tight, so when the end cover is disassembled, it is usually necessary to hammer it with a rubber hammer. Directly hammering the end cover is likely to cause damage to the output shaft of the motor. This solution vertically sets a connecting column between adjacent connecting rods, so that the end cover can be removed by directly knocking on the connecting column, which is safer.

[0022] Optionally, the protective cover has multiple groups of fixing buckles distributed circumferentially at one end close to the end cover, the fixing buckles include a fixing column and a fixing hook, the fixing column is parallel to the connecting rod, the fixing hook is coaxially rotatably connected to the end of the fixing column away from the protective cover, a fixing groove for inserting the connecting rod is provided on the fixing hook, and the fixing hook abuts against one side end of the connecting column close to the positioning block.

[0023] By setting a fixing buckle on the protective cover, when the protective cover is aligned with the end cover for installation, the fixing column is located on one side of the connecting column. At this time, the fixing hook is rotated to allow the connecting rod to be directly inserted into the fixing groove. The fixing hook will abut against one side end of the connecting column close to the positioning block. At this time, the protective cover is fixed. This solution makes the installation and disassembly of the protective cover more convenient.

[0024] Optionally, the slot width of the fixing slot is greater than the diameter of the connecting rod, and the slot bottom width of the fixing slot is equal to the diameter of the connecting rod.

[0025] By setting the notch of the fixing groove to be larger than the diameter of the connecting rod, it is easier to insert the connecting rod into the fixing groove. At the same time, the bottom width of the fixing groove is set to be equal to the diameter of the connecting rod, so that the connecting rod will be stuck when inserted into the bottom of the fixing groove, making it more secure.

[0026] (III) Beneficial effects

[0027] The beneficial effects of the utility model are as follows: the electromagnetic braking low-speed permanent magnet synchronous motor of the utility model is easy to disassemble and repair. When installing the motor, the stator and rotor of the motor are respectively installed inside the seat body, and then the two end covers are respectively aligned with the two ends of the seat body, so that the output shaft of the motor passes through the two end covers respectively. At this time, the connecting rods on the two end covers are aligned one by one, and then the aligned connecting rods are connected and fixed by the positioning assembly. At this time, the installation of the two end covers is completed, and finally the fan is installed to one end of the output shaft and the protective cover is installed. Similarly, when disassembling, it is only necessary to open the positioning assembly to remove the two end covers for maintenance. This scheme makes the disassembly of the motor more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0029] Figure 2 It is an exploded schematic diagram of an embodiment of the utility model;

[0030] Figure 3 for Figure 2 Enlarged view of point A.

[0031] [Description of Reference Numerals]

[0032] 1. Base body; 11. Slide groove; 12. Mounting slot; 2. End cover; 21. Connecting rod; 22. Positioning piece; 23. Connecting column; 3. Protective cover; 31. Fixing buckle; 311. Fixing column; 312. Fixing hook; 3121. Fixing groove; 4. Positioning assembly; 41. Positioning block; 411. Positioning groove; 412. Partitioning groove; 42. Compression spring; 43. Positioning sleeve; 431. Positioning slot. DETAILED DESCRIPTION

[0033] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0034] The electromagnetic braking low-speed permanent magnet synchronous motor proposed in the embodiment of the utility model is easy to disassemble and repair. When installing the motor, the stator and rotor of the motor are respectively installed inside the base body, and then the two end covers are respectively aligned with the two ends of the base body, so that the output shaft of the motor passes through the two end covers respectively. At this time, the connecting rods on the two end covers are aligned one by one, and then the aligned connecting rods are connected and fixed by the positioning assembly. At this time, the installation of the two end covers is completed, and finally the fan is installed to one end of the output shaft and the protective cover is installed. Similarly, when disassembling, it is only necessary to open the positioning assembly to remove the two end covers for maintenance. This solution makes the disassembly of the motor more convenient.

[0035] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] Reference Figure 1 and Figure 2 An electromagnetic braking low-speed permanent magnet synchronous motor which is easy to disassemble and maintain comprises a base body 1, end covers 2 coaxially buckled on both ends of the base body 1, and a protective cover 3 coaxially installed on one end of the end cover 2 away from the base body 1.

[0037] See also Figure 1 and Figure 3 A plurality of connecting rods 21 are vertically welded to the end faces of the two end covers 2 that are close to each other. The plurality of connecting rods 21 are evenly arranged circumferentially, and two coaxially aligned connecting rods 21 form a group. A positioning piece 22 is integrally formed at one end of the connecting rod 21 away from the end cover 2. The positioning piece 22 is coaxial with the connecting rod 21. The positioning pieces 22 on the connecting rods 21 are abutted against each other as the end covers 2 are installed. A plurality of positioning components 4 for positioning the two connecting rods 21 of the same group are arranged on the side ends of the seat body 1.

[0038] The positioning assembly 4 includes two positioning blocks 41 which are vertically arranged on the side ends of the base body 1 and slide toward each other along the circumference of the base body 1. A slide groove 11 for the positioning blocks 41 to slide is provided on the side end of the base body 1. A compression spring 42 is embedded in the slide groove 11 of the base body 1 to push the positioning blocks 41 of the same group to abut against each other. The slide groove 11 is a "T"-shaped groove. The slide grooves 11 of the two positioning blocks 41 of the same group that are slidably inserted are connected to each other. An installation slot 12 for the positioning block 41 to be placed is provided on the side end of the base body 1 in the middle of the two connected slide grooves 11, and a section of the surface where the two positioning blocks 41 slide and abut against each other is provided with a positioning groove 411 for inserting the positioning sheet 22 and part of the connecting rod 21. When the end cover 2 is positioned at the two ends of the seat body 1, the positioning pieces 22 on the same group of connecting rods 21 abut against each other, and the two corresponding positioning blocks 41 are directly slid. At this time, the positioning grooves 411 on the two positioning blocks 41 are merged and the two positioning pieces 22 are limited in the positioning grooves 411. A compression spring 42 is embedded in the slide groove 11, so that the compression spring 42 pushes the two positioning blocks 41 to move toward each other and abut against each other. When the motor is working, the compression spring 42 can still push the positioning block 41 to fix the positioning piece 22.

[0039] The positioning assembly 4 also includes a positioning sleeve 43, which is provided with a positioning slot 431 for inserting and clamping the ends of the two positioning blocks 41 that are abutted against each other and away from the base body 1. The two positioning blocks 41 are completely fixed by inserting and clamping the positioning sleeve 43 to prevent the two positioning blocks 41 from being disengaged due to the vibration generated when the motor is working.

[0040] The end of the positioning block 41 away from the base body 1 is provided with a separation groove 412 along the extension direction of the base body 1, and the two parallel side walls of the positioning sleeve 43 are respectively inserted into the separation grooves 412 of the same group of positioning blocks 41 to separate the same group of positioning blocks 41. When installing the end cover 2, the two positioning blocks 41 can be separated in a direction away from each other, and then the two side walls of the positioning sleeve 43 are respectively inserted into the positioning slots 431, and the end cover 2 can be directly installed at this time, so that the axially aligned positioning pieces 22 can abut against each other between the two positioning blocks 41, thereby facilitating the installation of the end cover 2.

[0041] A connecting column 23 is vertically welded between two adjacent connecting rods 21 installed on the same end cover 2. When the end cover 2 is disassembled, the connecting column 23 can be knocked by a rubber hammer to remove the end cover 2, which is more convenient.

[0042] There are multiple groups of fixing buckles 31 distributed circumferentially at one end of the protective cover 3 close to the end cover 2. The fixing buckles 31 include fixing columns 311 and fixing hooks 312. The fixing columns 311 are parallel to the connecting rod 21 and welded to the protective cover 3. The fixing hooks 312 are coaxially connected to the end of the fixing columns 311 away from the protective cover 3 through a rotating shaft. The fixing hooks 312 are provided with fixing grooves 3121 for the connecting rod 21 to be inserted. The fixing hooks 312 abut against one side end of the connecting column 23 close to the positioning block 41. The slot width of the fixing grooves 3121 is greater than the diameter of the connecting rod 21, and the slot bottom width of the fixing grooves 3121 is equal to the diameter of the connecting rod 21. When the protective cover 3 is aligned with the end cover 2 and installed, the fixing columns 311 are located on one side of the connecting columns 23. At this time, the fixing hooks 312 are rotated so that the connecting rod 21 is directly inserted into the fixing grooves 3121, and the fixing hooks 312 will abut against one side end of the connecting column 23 close to the positioning block 41.

[0043] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An electromagnetic braking low-speed permanent magnet synchronous motor that is easy to disassemble and repair, characterized in that: The invention comprises a seat body (1), end covers (2) coaxially buckled on both ends of the seat body (1), and a protective cover (3) coaxially mounted on one end cover (2) away from the seat body (1); a plurality of connecting rods (21) are vertically arranged on the end surfaces of the two end covers (2) close to each other; the plurality of connecting rods (21) are evenly arranged in the circumferential direction; two coaxially aligned connecting rods (21) form a group; and a plurality of positioning components (4) for positioning the two connecting rods (21) in the same group are arranged on the circumferential side ends of the seat body (1).

2. The electromagnetic braking low-speed permanent magnet synchronous motor that is easy to disassemble and repair as claimed in claim 1 is characterized in that: A positioning piece (22) is provided at one end of the connecting rod (21) away from the end cover (2), and the positioning pieces (22) on the same group of connecting rods (21) abut against each other when the end cover (2) is installed. The positioning assembly (4) comprises two positioning blocks (41) which are vertically arranged on the side ends of the seat body (1) and slide in opposite directions along the circumference of the seat body (1). A section of the surface where the two positioning blocks (41) slide and abut against each other and are close to each other is provided with a positioning groove (411) for inserting the positioning piece (22) and part of the connecting rod (21).

3. The electromagnetic braking low-speed permanent magnet synchronous motor that is easy to disassemble and repair as claimed in claim 2 is characterized in that: The side end of the seat body (1) is provided with a sliding groove (11) for the positioning block (41) to slide, and the seat body (1) is embedded with a compression spring (42) in the sliding groove (11) for pushing the positioning blocks (41) of the same group to abut against each other.

4. The electromagnetic braking low-speed permanent magnet synchronous motor that is easy to disassemble and repair as claimed in claim 3 is characterized in that: The slide groove (11) is a "T"-shaped groove, and the slide grooves (11) of two positioning blocks (41) of the same group are slidably inserted and connected to each other. The side end of the seat body (1) is provided with an installation slot (12) for the positioning block (41) to be placed in the middle of the two mutually connected slide grooves (11).

5. The electromagnetic braking low-speed permanent magnet synchronous motor that is easy to disassemble and repair as claimed in claim 2 is characterized in that: The positioning assembly (4) further comprises a positioning sleeve (43), and the positioning sleeve (43) is provided with a positioning slot (431) for inserting and clamping one end of the two mutually abutting positioning blocks (41) away from the base body (1).

6. The electromagnetic braking low-speed permanent magnet synchronous motor that is easy to disassemble and repair as claimed in claim 5 is characterized in that: An end of the positioning block (41) away from the seat body (1) is provided with a separation groove (412) along the extension direction of the seat body (1), and two parallel side walls of the positioning sleeve (43) are respectively inserted into the separation grooves (412) of the positioning blocks (41) of the same group to separate the positioning blocks (41) of the same group.

7. The electromagnetic braking low-speed permanent magnet synchronous motor that is easy to disassemble and repair as claimed in claim 6 is characterized in that: A connecting column (23) is vertically arranged between two adjacent connecting rods (21) installed on the same end cover (2).

8. The electromagnetic braking low-speed permanent magnet synchronous motor that is easy to disassemble and repair as claimed in claim 7 is characterized in that: A plurality of groups of fixing buckles (31) are circumferentially distributed on one end of the protective cover (3) close to the end cover (2), and the fixing buckle (31) comprises a fixing column (311) and a fixing hook (312), the fixing column (311) is parallel to the connecting rod (21), the fixing hook (312) is coaxially rotatably connected to one end of the fixing column (311) away from the protective cover (3), a fixing groove (3121) for inserting the connecting rod (21) is provided on the fixing hook (312), and the fixing hook (312) abuts against one side end of the connecting column (23) close to the positioning block (41).

9. The electromagnetic braking low-speed permanent magnet synchronous motor that is easy to disassemble and repair as claimed in claim 8, characterized in that: The slot width of the fixing slot (3121) is greater than the diameter of the connecting rod (21), and the slot bottom width of the fixing slot (3121) is equal to the diameter of the connecting rod (21).

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