Variable-frequency permanent magnet motor with high safety protection

Abstract

The utility model discloses a frequency conversion permanent magnet motor with high safety protection, which comprises a first outer shell and a second outer shell, each of the first outer shell and the second outer shell comprises an integrally formed hollow coaming, a connecting plate is arranged between the first outer shell and the second outer shell, one side of the first outer shell far away from the connecting plate is connected with a front cover, and the other side of the first outer shell far away from the connecting plate is connected with a rear cover. The side, away from the connecting plate, of the second outer shell is connected with a rear cover, a junction box is arranged above the second outer shell, connecting bases are arranged below the first outer shell and the second outer shell, and the first outer shell and the second outer shell are protective outer shells. According to the utility model, the permanent magnet motor and the frequency conversion control structure are integrally designed, are separated by the connecting plate, and are matched with the outer shell structure, so that the sealing performance is good, the protection grade is high, and a better safety protection effect is achieved; and on the other hand, the two outer shells are connected with each other, disassembly and assembly are convenient, and use convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to variable frequency permanent magnet motor technical field, concretely relates to a variable frequency permanent magnet motor with high safety protection. BACKGROUND

[0002] In the existing permanent magnet motor variable frequency control structure, the general motor is separated with the variable frequency control structure, and is connected through long distance control line, and this mode exists unstable situation in long distance signal transmission process, and then the variable frequency control structure and the permanent magnet motor are integrated in the prior art;And the existing integrated variable frequency permanent magnet motor structure is generally set in a complete shell with the variable frequency control structure and the motor, and this structure is single, and the layout of the parts is not convenient, and the protection effect of the parts is low, and there is room for improvement. INVENTION CONTENTS

[0003] The utility model aims at the insufficient in the above background art, provides a variable frequency permanent magnet motor with high safety protection effect, and overall parts are easy to disassemble.

[0004] To achieve the above object, the utility model discloses a variable frequency permanent magnet motor with high safety protection, adopts the following technical scheme:

[0005] A variable frequency permanent magnet motor with high safety protection, comprising a first outer shell and a second outer shell, the first outer shell and the second outer shell each comprise an integrally formed hollow surrounding plate, a connecting plate is arranged between the first outer shell and the second outer shell, a front cover is connected to one side of the first outer shell away from the connecting plate, a rear cover is connected to one side of the second outer shell away from the connecting plate, a junction box is arranged above the second outer shell, a connecting base is arranged below each of the first outer shell and the second outer shell, and the first outer shell and the second outer shell are protective outer shells.

[0006] The utility model further improves the variable frequency permanent magnet motor with high safety protection, wherein a permanent magnet motor main structure is arranged in the first outer shell, a variable frequency control structure is arranged in the second outer shell, a through hole is arranged on the connecting plate, and the through hole is used to connect the wiring between the permanent magnet motor main structure and the variable frequency control structure.

[0007] The utility model further improves the variable frequency permanent magnet motor with high safety protection, wherein one side of the front cover close to the first outer shell is provided with a threaded groove, a through groove is arranged horizontally through the first outer shell on the first outer shell, a second threaded groove is arranged through on the connecting plate, a bolt is arranged at the second threaded groove, and the bolt is connected to the threaded groove through the through groove.

[0008] The further improvement of the utility model relates to a variable frequency permanent magnet motor with high safety protection, wherein a third threaded groove is further arranged on the connecting plate, a second threaded groove is arranged on the second shell body, a through hole is arranged on the rear cover, a second bolt is arranged on the through hole, and the second bolt is connected to the third threaded groove through the second threaded groove.

[0009] The further improvement of the utility model relates to a variable frequency permanent magnet motor with high safety protection, wherein a third threaded groove is further arranged on the connecting plate, a second threaded groove is arranged on the second shell body, a through hole is arranged on the rear cover, a second bolt is arranged on the through hole, and the second bolt is connected to the third threaded groove through the second threaded groove.

[0010] The further improvement of the utility model relates to a variable frequency permanent magnet motor with high safety protection, wherein a third threaded groove is further arranged on the connecting plate, a second threaded groove is arranged on the second shell body, a through hole is arranged on the rear cover, a second bolt is arranged on the through hole, and the second bolt is connected to the third threaded groove through the second threaded groove.

[0011] The further improvement of the utility model relates to a variable frequency permanent magnet motor with high safety protection, wherein a third threaded groove is further arranged on the connecting plate, a second threaded groove is arranged on the second shell body, a through hole is arranged on the rear cover, a second bolt is arranged on the through hole, and the second bolt is connected to the third threaded groove through the second threaded groove.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a permanent magnet motor and variable frequency control structure are integrally designed, and the both are arranged apart by the connecting plate, cooperate shell body structure, have good sealing performance, high protection level, have good safety protection effect; on the other hand, two shell bodies are connected with each other, convenient to disassemble and assemble, and the use convenient performance is improved. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the utility model;

[0015] Figure 2 It is Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 3 It is Figure 1 It is the structural schematic diagram of the utility model;

[0017] Figure 4 It is Figure 1 It is the structural schematic diagram of the utility model.

[0018] In the drawing: 1 first shell body, 2 second shell body, 3 connecting plate, 4 permanent magnet motor main structure, 5 variable frequency control structure, 6 junction box, 7 front cover, 8 rear cover pad, 9 rear cover, 10 threaded groove, 11 second threaded groove, 12 bolt, 13 third threaded groove, 14 second bolt, 15 through hole, 16 second through hole, 17 junction box pad. CONCRETE IMPLEMENTATION

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4 As shown, a variable frequency permanent magnet motor with high safety protection includes a first outer shell 1 and a second outer shell 2. Both the first and second outer shells include an integrally formed hollow enclosure, preferably with a square cross-section. A connecting plate 3 is provided between the first outer shell 1 and the second outer shell 2. A front cover 7 is connected to the side of the first outer shell away from the connecting plate, and a rear cover 9 is connected to the side of the second outer shell away from the connecting plate. A junction box 6 is provided on the top of the second outer shell. A connecting base is provided at the bottom of both the first and second outer shells. The first and second outer shells are protective outer shells.

[0021] Specifically, the first outer casing houses the main permanent magnet motor structure 4, and the second outer casing houses the frequency converter control structure 5. Bearings are installed on both the front cover and the connecting plate for connection to the rotor shaft. The connecting plate has through holes 15 for wiring between the main permanent magnet motor structure and the frequency converter control structure. The frequency converter control structure is connected to the connecting plate and also serves to dissipate heat from the frequency converter control structure.

[0022] Furthermore, the front cover has a threaded groove 10 on the side near the first outer shell. The first outer shell has a horizontal through-groove. The connecting plate has a through-groove 11, and a bolt 12 is installed at the second threaded groove, passing through the through-groove and connecting to the threaded groove. The connecting plate also has a through-groove 13, and the second outer shell has a through-groove 13. The rear cover has a through-hole, and a second bolt is installed at the through-hole, passing through the second through-groove and connecting to the third threaded groove. The connection between the front cover, the first outer shell, the connecting plate, the second outer shell, and the rear cover is achieved by bolts and second bolts.

[0023] Furthermore, a back cover gasket is provided between the second outer casing and the back cover, with a notch in the center of the gasket. A second through hole 16 is provided on the top of the second outer casing, located inside the junction box. A junction box gasket 17 is provided between the junction box and the second outer casing, with a second notch in the center of the gasket. The gasket enhances the protective effect. A terminal block is provided inside the junction box for connecting an external power cord.

[0024] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A variable frequency permanent magnet motor with high safety protection, characterized in that: Including first shell and second shell, first shell, second shell each includes a hollow setting of the integrated fence, first shell and second shell are equipped with connecting plate between, the side of first shell away from connecting plate is connected with front cover, the side of second shell away from connecting plate is connected with rear cover, second shell top is provided with terminal box, first shell, second shell below each is equipped with connecting base, first shell, second shell are protective shell.

2. The variable frequency permanent magnet motor with high safety protection according to claim 1, characterized in that: The first shell is provided with a permanent magnet motor main structure, and the second shell is provided with a frequency conversion control structure, the connecting plate is provided with a through hole, and the through hole is used for connecting the wire between the permanent magnet motor main structure and the frequency conversion control structure.

3. The variable frequency permanent magnet motor with high safety protection according to claim 2, characterized in that: The front cover is provided with a threaded groove on the side close to the first shell, the first shell is provided with a through slot horizontally penetrating the first shell, the connecting plate is provided with a second threaded groove penetrating, and the second threaded groove is provided with a bolt, the bolt is connected to the threaded groove through the through slot.

4. The variable frequency permanent magnet motor with high safety protection according to claim 3, characterized in that: The connecting plate is also provided with a third threaded groove penetrating, the second shell is provided with a second through slot penetrating, the rear cover is provided with a penetrating hole, the penetrating hole is provided with a second bolt, and the second bolt is connected to the third threaded groove through the second through slot.

5. The variable frequency permanent magnet motor with high safety protection according to claim 4, characterized in that: The second shell and the rear cover are provided with a rear cover pad, and the center of the rear cover pad is provided with a notch.

6. The variable frequency permanent magnet motor with high safety protection according to claim 5, characterized in that: The second shell is provided with a second through hole above, and the second through hole is placed inside the terminal box.

7. The variable frequency permanent magnet motor with high safety protection according to claim 6, characterized in that: The terminal box and the second shell are provided with a terminal box pad, and the center of the terminal box pad is provided with a second notch.

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