Three-phase asynchronous motor convenient to maintain

Abstract

The utility model relates to the technical field of motors, in particular to a three-phase asynchronous motor convenient to maintain, which comprises an end cover, a casing, a housing, four supporting foot seats and a plurality of connecting screws. The machine shell comprises a front end facing the end cover and a rear end facing the housing. The end cover and the machine shell are fixed through the connecting screws, and the cover shell and the machine shell are fixed through the connecting screws. The four supporting foot bases are arranged in a circumferential array mode, the tail ends of the adjacent supporting foot bases are connected with one another, the four connecting lines form a rectangular frame, and the end cover, the machine shell, the cover shell and the connecting screws are located in the rectangular frame. According to the utility model, the rectangular frame is formed by the four connecting lines, and the end cover, the casing, the housing and the connecting screws are located in the rectangular frame, so that any two adjacent supporting foot seats of the four supporting foot seats can play a supporting role, and therefore, when the three-phase asynchronous motor is maintained, each connecting screw can be detached conveniently by turning over the motor, and the maintenance efficiency is improved. It is unnecessary to worry that the motor falls down or moves to interfere inspection.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a three-phase asynchronous motor which is easy to maintain. Background Art

[0002] A three-phase asynchronous motor is a type of induction motor powered by three phases of 380V AC (120-degree phase shift). Because the rotor and stator's rotating magnetic field rotate in the same direction but at different speeds, slip occurs, giving it the name "three-phase asynchronous motor." The rotor speed of a three-phase asynchronous motor is lower than that of the rotating magnetic field. The relative motion between the rotor winding and the magnetic field generates an electromotive force and current, which interacts with the magnetic field to produce electromagnetic torque, achieving energy conversion.

[0003] The three-phase asynchronous motor is technically complex, expensive, and difficult to maintain and overhaul. During maintenance, some screws are fixed under the motor shaft, making disassembly and maintenance difficult. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a three-phase asynchronous motor that is easy to maintain.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A three-phase asynchronous motor that is easy to maintain, comprising an end cover, a housing, a cover, four support legs and a plurality of connecting screws;

[0007] The housing includes a front end facing the end cover and a rear end facing the cover shell, a plurality of first connection holes are provided on the outer periphery of the end cover, and a connection seat is provided on the outer periphery of the housing near the rear end with the same number as the first connection holes;

[0008] A second connecting hole corresponding to the first connecting hole is provided on the side wall of the connecting base, a third connecting hole is provided on the top of the connecting base, the cover is sleeved on the connecting base and provided with a fourth connecting hole, the connecting screws fix the end cover and the housing to each other through the first connecting hole and the second connecting hole, and the connecting screws fix the cover and the housing to each other through the third connecting hole and the fourth connecting hole;

[0009] The four support legs are arranged in a circular array, and the ends of adjacent support legs are connected to each other. The four connecting lines form a rectangular frame, and the end cover, casing, cover, and connecting screws are located in the rectangular frame.

[0010] Preferably, a plurality of heat sinks are arranged in parallel on the outer periphery of the housing.

[0011] Preferably, the heat sink is located in a rectangular frame.

[0012] Preferably, there are intervals between the connecting seats.

[0013] Preferably, the edges of the support base are rounded.

[0014] Preferably, a plurality of weight-reducing grooves are provided on the support base.

[0015] Preferably, an outer convex portion is provided on the outer periphery of the end cover, and the first connecting hole is provided on the outer convex portion.

[0016] Preferably, the outer protrusion is provided with a reinforcing rib.

[0017] Preferably, an auxiliary groove corresponding to the first connecting hole is further provided on the outer periphery of the end cover.

[0018] The beneficial effects of the present invention are as follows: a rectangular frame is formed by four connecting lines, and the end cover, casing, cover shell, and connecting screws are located within the rectangular frame, so that any two adjacent supporting feet of the four supporting feet can play a supporting role, thereby making it convenient to remove the connecting screws of the three-phase asynchronous motor by flipping the motor during maintenance, without having to worry about the motor falling or moving and interfering with the inspection; and through the flippable support, maintenance inspectors can maintain a posture to inspect the inside of the motor, thereby improving maintenance speed; and by arranging the second connecting hole and the third connecting hole on the connecting seat, the structure of the motor can be made more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a schematic diagram of the three-phase asynchronous motor which is easy to maintain according to a specific embodiment of the present invention;

[0020] Figure 2 The figure shows a front structural diagram of a three-phase asynchronous motor that is easy to maintain according to a specific embodiment of the present utility model;

[0021] Explanation of reference numbers: 1. End cover; 11. Outer protrusion; 12. Reinforcing rib; 13. Auxiliary groove; 2. Casing; 21. Heat sink; 3. Cover; 4. Four support legs; 41. Rounded corners; 42. Weight-reducing groove; 5. Connecting screw; 31. Fourth connecting hole; 6. Rectangular frame. DETAILED DESCRIPTION

[0022] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0023] Please refer to Figures 1 to 2As shown, the utility model is a three-phase asynchronous motor that is easy to maintain, including an end cover 1, a housing 2, a cover 3, four support legs 4 and a plurality of connecting screws 5;

[0024] The housing 2 includes a front end facing the end cover 1 and a rear end facing the cover 3. The end cover 1 is provided with a plurality of first connection holes on its outer periphery. The housing 2 is provided with connection sockets on its outer periphery near the rear end, the same number as the first connection holes.

[0025] A second connecting hole corresponding to the first connecting hole is provided on the side wall of the connecting base, and a third connecting hole is provided on the top of the connecting base. The cover 3 is sleeved on the connecting base and provided with a fourth connecting hole 31. The connecting screws 5 fix the end cover 1 and the housing 2 to each other through the first and second connecting holes. The connecting screws 5 fix the cover 3 and the housing 2 to each other through the third and fourth connecting holes 31.

[0026] The four support legs are arranged in a circular array, and the ends of adjacent support legs are connected to each other. The four connecting lines form a rectangular frame 6, and the end cover 1, housing 2, cover 3, and connecting screws 5 are located in the rectangular frame 6.

[0027] As can be seen from the above description, a rectangular frame 6 is formed by four connecting lines, and the end cover 1, the casing 2, the cover 3, and the connecting screws 5 are located in the rectangular frame 6, so that any two adjacent legs of the four legs can play a supporting role, so that when the three-phase asynchronous motor is maintained, it is convenient to remove the various connecting screws 5 by flipping the motor, without worrying about the motor falling or moving and interfering with the inspection; and through the support that can be flipped over, the maintenance inspector can maintain a posture to inspect the inside of the motor, thereby improving the maintenance speed; by providing a second connecting hole and a third connecting hole on the connecting seat, the structure of the motor can be made more compact.

[0028] Furthermore, a plurality of heat sinks 21 are arranged in parallel on the outer periphery of the housing 2 .

[0029] It can be seen from the above description that the heat dissipation of the motor can be achieved by disposing the heat sink 21 .

[0030] Furthermore, the heat sink 21 is located in the rectangular frame 6 .

[0031] Furthermore, there are intervals between the connecting seats.

[0032] As can be seen from the above description, by providing a gap between the connecting seats, the fan in the housing 3 can blow out air, thereby enhancing the heat dissipation of the motor.

[0033] Furthermore, the edges of the support base are rounded 41 .

[0034] As can be seen from the above description, by rounding the edges of the support legs 41, it is possible to save effort during flipping and improve flipping efficiency.

[0035] Furthermore, a plurality of weight-reducing grooves 42 are provided on the support base.

[0036] It can be seen from the above description that the weight of the motor can be reduced by providing the weight-reducing grooves 42 .

[0037] Furthermore, an outer convex portion 11 is provided on the outer periphery of the end cover 1 , and the first connecting hole is provided on the outer convex portion 11 .

[0038] Furthermore, a reinforcing rib 12 is provided on the outer protrusion 11 .

[0039] It can be seen from the above description that the reinforcing ribs 12 can enhance the mechanical properties of the convex portion 11 and prevent the convex portion 11 from deforming.

[0040] Furthermore, an auxiliary groove 13 corresponding to the first connecting hole is provided on the outer periphery of the end cover 1 .

[0041] It can be seen from the above description that, by providing the auxiliary groove 13 , it is possible to conveniently use tools to disassemble and assemble the connecting screws 5 , thereby improving installation efficiency. Example 1

[0042] A three-phase asynchronous motor that is easy to maintain, comprising an end cover 1, a housing 2, a cover 3, four support legs 4 and a plurality of connecting screws 5;

[0043] The housing 2 includes a front end facing the end cover 1 and a rear end facing the cover 3. The end cover 1 is provided with a plurality of first connection holes on its outer periphery. The housing 2 is provided with connection sockets on its outer periphery near the rear end, the same number as the first connection holes.

[0044] A second connecting hole corresponding to the first connecting hole is provided on the side wall of the connecting base, and a third connecting hole is provided on the top of the connecting base. The cover 3 is sleeved on the connecting base and provided with a fourth connecting hole 31. The connecting screws 5 fix the end cover 1 and the housing 2 to each other through the first and second connecting holes. The connecting screws 5 fix the cover 3 and the housing 2 to each other through the third and fourth connecting holes 31.

[0045] The four support legs are arranged in a circular array, and the ends of adjacent support legs are connected to each other. The four connecting lines form a rectangular frame 6, and the end cover 1, housing 2, cover 3, and connecting screws 5 are located in the rectangular frame 6.

[0046] A plurality of heat sinks 21 are arranged in parallel on the outer periphery of the housing 2 .

[0047] The heat sink 21 is located in the rectangular frame 6 .

[0048] There are intervals between the connecting seats.

[0049] The edges of the support base are rounded 41 .

[0050] A plurality of weight-reducing grooves 42 are provided on the support base.

[0051] An outer convex portion 11 is provided on the outer periphery of the end cover 1 , and the first connection hole is provided on the outer convex portion 11 .

[0052] The outer protrusion 11 is provided with a reinforcing rib 12 .

[0053] An auxiliary groove 13 corresponding to the first connecting hole is also provided on the outer periphery of the end cover 1 . Example 2

[0054] A three-phase asynchronous motor that is easy to maintain, comprising an end cover 1, a housing 2, a cover 3, four support legs 4 and a plurality of connecting screws 5;

[0055] The housing 2 includes a front end facing the end cover 1 and a rear end facing the cover 3. The end cover 1 is provided with a plurality of first connection holes on its outer periphery. The housing 2 is provided with connection sockets on its outer periphery near the rear end, the same number as the first connection holes.

[0056] A second connecting hole corresponding to the first connecting hole is provided on the side wall of the connecting base, and a third connecting hole is provided on the top of the connecting base. The cover 3 is sleeved on the connecting base and provided with a fourth connecting hole 31. The connecting screws 5 fix the end cover 1 and the housing 2 to each other through the first and second connecting holes. The connecting screws 5 fix the cover 3 and the housing 2 to each other through the third and fourth connecting holes 31.

[0057] The four support legs are arranged in a circular array, and the ends of adjacent support legs are connected to each other. The four connecting lines form a rectangular frame 6, and the end cover 1, housing 2, cover 3, and connecting screws 5 are located in the rectangular frame 6.

[0058] A plurality of heat sinks 21 are arranged in parallel on the outer periphery of the housing 2 .

[0059] The heat sink 21 is located in the rectangular frame 6 .

[0060] There are intervals between the connecting seats.

[0061] The edges of the support base are rounded 41 . Example 3

[0062] A three-phase asynchronous motor that is easy to maintain, comprising an end cover 1, a housing 2, a cover 3, four support legs 4 and a plurality of connecting screws 5;

[0063] The housing 2 includes a front end facing the end cover 1 and a rear end facing the cover 3. The end cover 1 is provided with a plurality of first connection holes on its outer periphery. The housing 2 is provided with connection sockets on its outer periphery near the rear end, the same number as the first connection holes.

[0064] A second connecting hole corresponding to the first connecting hole is provided on the side wall of the connecting base, and a third connecting hole is provided on the top of the connecting base. The cover 3 is sleeved on the connecting base and provided with a fourth connecting hole 31. The connecting screws 5 fix the end cover 1 and the housing 2 to each other through the first and second connecting holes. The connecting screws 5 fix the cover 3 and the housing 2 to each other through the third and fourth connecting holes 31.

[0065] The four support legs are arranged in a circular array, and the ends of adjacent support legs are connected to each other. The four connecting lines form a rectangular frame 6, and the end cover 1, housing 2, cover 3, and connecting screws 5 are located in the rectangular frame 6.

[0066] The edges of the support base are rounded 41 .

[0067] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A three-phase asynchronous motor that is easy to maintain, characterized in that: It includes an end cover, a housing, a cover, four support legs and a plurality of connecting screws; The housing includes a front end facing the end cover and a rear end facing the cover shell, a plurality of first connection holes are provided on the outer periphery of the end cover, and a connection seat is provided on the outer periphery of the housing near the rear end with the same number as the first connection holes; A second connecting hole corresponding to the first connecting hole is provided on the side wall of the connecting base, a third connecting hole is provided on the top of the connecting base, the cover is sleeved on the connecting base and provided with a fourth connecting hole, the connecting screws fix the end cover and the housing to each other through the first connecting hole and the second connecting hole, and the connecting screws fix the cover and the housing to each other through the third connecting hole and the fourth connecting hole; The four support legs are arranged in a circular array, and the ends of adjacent support legs are connected to each other. The four connecting lines form a rectangular frame, and the end cover, casing, cover, and connecting screws are located in the rectangular frame.

2. The three-phase asynchronous motor easy to maintain according to claim 1, characterized in that: A plurality of heat dissipation fins are arranged in parallel on the outer periphery of the housing.

3. The three-phase asynchronous motor easy to maintain according to claim 2, characterized in that: The heat sink is located in the rectangular frame.

4. The three-phase asynchronous motor easy to maintain according to claim 2, characterized in that: There are intervals between the connecting seats.

5. The three-phase asynchronous motor easy to maintain according to claim 1, characterized in that: The edges of the support base are rounded.

6. The three-phase asynchronous motor easy to maintain according to claim 1, characterized in that: A plurality of weight-reducing grooves are provided on the support foot.

7. The three-phase asynchronous motor easy to maintain according to claim 1, characterized in that: An outer convex portion is provided on the outer periphery of the end cover, and the first connecting hole is provided on the outer convex portion.

8. The three-phase asynchronous motor easy to maintain according to claim 7, characterized in that: The outer protrusion is provided with a reinforcing rib.

9. The three-phase asynchronous motor easy to maintain according to claim 7, characterized in that: An auxiliary groove corresponding to the first connecting hole is also provided on the outer periphery of the end cover.

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