Connecting structure for three-phase asynchronous motor

Abstract

The utility model discloses a connecting structure for a three-phase asynchronous motor, which relates to the field of three-phase asynchronous motors and comprises a base, the upper end of the base is provided with a motor body, one side of the motor body is fixedly connected with a first connecting line, and the other end of the first connecting line is provided with an input module. A connecting plate is fixedly connected to one side of the base, a lower protective shell is arranged at the upper end of the connecting plate, and a connecting seat is arranged in the lower protective shell; compared with the prior art, the protective device has the advantages that the protective plate can be assembled and disassembled by matching the clamping plate, the telescopic rod and the spring with the short plate and the internal clamping hole, so that the power supply head can be fixed, the stability between the power supply head and the connecting seat is improved, and the normal operation of the motor can also be ensured; and the threaded sleeve, the clamping ring and the clamping ring are matched with the threaded column, so that the upper protective shell can be assembled and separated, and the difficulty of a worker in overhauling the connecting seat and the power supply head can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of three-phase asynchronous motors, in particular to a connection structure for three-phase asynchronous motors. Background Art

[0002] A three-phase asynchronous motor is a type of electric motor that is powered by a 380V three-phase AC power supply (with a phase difference of 120 degrees). Since the rotor and stator rotating magnetic fields of a three-phase asynchronous motor rotate in the same direction but at different speeds, there is a slip rate, so it is called a three-phase asynchronous motor. When installing a three-phase asynchronous motor, the power cord needs to be connected through a terminal block or a junction box.

[0003] However, in the prior art, the connection points in the junction box of the three-phase asynchronous motor may become loose over a long period of time, and the unstable electrical connection will affect the normal operation of the motor. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a connection structure for a three-phase asynchronous motor.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a connection structure for a three-phase asynchronous motor, comprising a base, a motor body is arranged at the upper end of the base, a first connecting wire is fixedly connected to one side of the motor body, an input module is arranged at the other end of the first connecting wire, a connecting plate is fixedly connected to one side of the base, a lower protective shell is arranged at the upper end of the connecting plate, a connecting seat is arranged inside the lower protective shell, a power supply head is arranged inside the connecting seat, a second connecting wire is fixedly connected to one side of the power supply head, a short plate is fixedly connected to a position near the power supply head inside the lower protective shell, and a card hole is opened inside the short plate;

[0006] A limit plate is provided on one side of the short plate, a slide groove is provided inside the limit plate, a slider is slidably connected inside the slide groove, a clamping plate is fixedly connected to one side of the slider, a telescopic rod is provided on the upper end of the clamping plate, and a spring is sleeved on the outside of the telescopic rod;

[0007] The front side of the lower protective shell is fixedly connected with a short block, the upper end of the short block is fixedly connected with a threaded column, and the upper end of the lower protective shell is movably connected with the upper protective shell;

[0008] A fixing plate is fixedly connected to the front side of the upper protective shell, a clamping ring is fixedly connected to the lower end of the fixing plate, a clamping ring is movably connected inside the clamping ring, and a threaded sleeve is fixedly connected to the lower end of the clamping ring;

[0009] The input module is electrically connected to the connection socket;

[0010] The slider slides in the slide groove through the clamping plate, the telescopic rod and the spring;

[0011] The number of the short blocks is multiple, and they are symmetrically arranged about the midline of the lower protective shell;

[0012] The threaded sleeve is movable with the fixing plate through the cooperation of the clamping ring and the clamping ring.

[0013] By adopting the above technical solution, the card plate is pushed, and the card plate compresses the telescopic rod and the spring, so that the limit plate slides along the inner wall of the short plate. When the card plate reaches the position of the card hole, the spring rebounds to make the telescopic rod push the card plate into the card hole, thereby realizing the installation of the limit plate. One side of the limit plate is close to the power supply head to fix it. Similarly, the card plate is pushed again, and the card plate slides out of the card hole to realize the disassembly of the limit plate, and the power supply head can be pulled out of the socket. The protective plate can be loaded and unloaded by the card plate, telescopic rod, spring, short plate and internal card hole, and then the power supply head can be fixed, thereby increasing the stability between it and the connecting seat, and can also ensure the normal operation of the motor.

[0014] By adopting the above technical scheme, by rotating the threaded sleeve, under the action of its internal thread and the external thread of the bolt column, the threaded sleeve slides on the outside of the threaded column to achieve separation of the upper protective shell, and the connecting seat and the power supply head inside the lower protective shell can be inspected. Similarly, the threaded sleeve is sleeved on the outside of the threaded column and rotated in the opposite direction, and the threaded column enters the inside of the threaded sleeve to achieve assembly of the upper protective shell and the lower protective shell. During the rotation of the threaded sleeve, the retaining ring will rotate inside the retaining ring. With the cooperation of the retaining ring and the retaining ring, the smoothness of the threaded sleeve during rotation can be increased. The upper protective shell can be assembled and separated by the threaded sleeve, the retaining ring, and the retaining ring in cooperation with the threaded column, thereby reducing the difficulty of the staff in repairing the connecting seat and the power supply head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the lower protective shell of the utility model.

[0017] Figure 3 It is a schematic diagram of the internal structure of the limiting plate of the utility model.

[0018] Figure 4 This is a schematic diagram of the upper protective shell structure of the utility model.

[0019] In the figure: 1. base; 2. motor body; 3. first connecting line; 4. input module; 5. connecting plate; 6. lower protective shell; 7. connecting seat; 8. power supply head; 9. second connecting line; 10. short plate; 11. clamping hole; 12. limit plate; 13. slide groove; 14. slider; 15. clamping plate; 16. telescopic rod; 17. spring; 18. short block; 19. threaded column; 20. upper protective shell; 21. fixing plate; 22. clamping ring; 23. clamping ring; 24. threaded sleeve. DETAILED DESCRIPTION

[0020] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Embodiment 1

[0022] See also Figure 1-Figure 4 The utility model provides a technical solution: a connection structure for a three-phase asynchronous motor, comprising a base 1, a motor body 2 is arranged on the upper end of the base 1, a first connecting line 3 is fixedly connected to one side of the motor body 2, an input module 4 is arranged on the other end of the first connecting line 3, a connecting plate 5 is fixedly connected to one side of the base 1, a lower protective shell 6 is arranged on the upper end of the connecting plate 5, a connecting seat 7 is arranged inside the lower protective shell 6, a power supply head 8 is arranged inside the connecting seat 7, a second connecting line 9 is fixedly connected to one side of the power supply head 8, and the inner side of the lower protective shell 6 is close to the inner side of the lower protective shell 6. A short plate 10 is fixedly connected to the position near the power supply head 8, and a clamping hole 11 is opened inside the short plate 10. A limiting plate 12 is arranged on one side of the short plate 10, and a slide groove 13 is opened inside the limiting plate 12. A slider 14 is slidably connected to the inside of the slide groove 13, and a clamping plate 15 is fixedly connected to one side of the slider 14. A telescopic rod 16 is arranged on the upper end of the clamping plate 15, and a spring 17 is sleeved on the outside of the telescopic rod 16. The input module 4 is electrically connected to the connecting seat 7, and the slider 14 slides in the slide groove 13 through the clamping plate 15, in cooperation with the telescopic rod 16 and the spring 17.

[0023] Specifically, push the card plate 15, the card plate 15 compresses the telescopic rod 16 and the spring 17, and slides the limit plate 12 along the inner wall of the short plate 10. When the card plate 15 reaches the position of the card hole 11, the spring 17 rebounds to make the telescopic rod 16 push the card plate 15 into the card hole 11, thereby realizing the installation of the limit plate 12. One side of the limit plate 12 is close to the power supply head 8 to fix it. Similarly, push the card plate 15 again, the card plate 15 slides out of the card hole 11, and the limit plate 12 is disassembled, and the power supply head 8 can be pulled out of the socket. The protective plate can be loaded and unloaded by the card plate 15, the telescopic rod 16, the spring 17 cooperates with the short plate 10 and the internal card hole 11, and then the power supply head 8 can be fixed, thereby increasing the stability between it and the connecting seat 7, and also ensuring the normal operation of the motor.

[0024] Embodiment 2

[0025] See also Figure 1-Figure 4 The utility model provides a technical solution: a connection structure for a three-phase asynchronous motor, a short block 18 is fixedly connected to the front side of the lower protective shell 6, a threaded column 19 is fixedly connected to the upper end of the short block 18, an upper protective shell 20 is movably connected to the upper end of the lower protective shell 6, a fixed plate 21 is fixedly connected to the front side of the upper protective shell 20, a clamping ring 22 is fixedly connected to the lower end of the fixing plate 21, a clamping ring 23 is movably connected inside the clamping ring 22, a threaded sleeve 24 is fixedly connected to the lower end of the clamping ring 23, the number of short blocks 18 is multiple groups, and they are symmetrically arranged about the lower protective shell 6, and the threaded sleeve 24 is movable with the clamping ring 22 and the fixing plate 21 through the clamping ring 23.

[0026] Specifically, the threaded sleeve 24 is rotated, and under the action of its internal thread and the external thread of the bolt column, the threaded sleeve 24 slides on the outside of the threaded column 19 to separate the upper protective shell 20, and the connecting seat 7 and the power supply head 8 inside the lower protective shell 6 can be inspected. Similarly, the threaded sleeve 24 is sleeved on the outside of the threaded column 19 and rotated in the opposite direction, and the threaded column 19 enters the inside of the threaded sleeve 24 to realize the assembly of the upper protective shell 20 and the lower protective shell 6. During the rotation of the threaded sleeve 24, the retaining ring 23 will rotate inside the retaining ring 22. With the cooperation of the retaining ring 23 and the retaining ring 22, the smoothness of the threaded sleeve 24 during rotation can be increased. The upper protective shell 20 can be assembled and separated by the threaded sleeve 24, the retaining ring 23, the retaining ring 22 and the threaded column 19, thereby reducing the difficulty of the staff in inspecting the connecting seat 7 and the power supply head 8.

[0027] Working principle: When the connection structure for the three-phase asynchronous motor is assembled and used, first, the power supply head 8 is inserted into the socket, and the other end of the power supply head 8 is connected to the power supply, and then the limiting plate 12 is used to fix the power supply head 8. The specific operation is to push the card plate 15, the card plate 15 compresses the telescopic rod 16 and the spring 17, and slide the limiting plate 12 along the inner wall of the short plate 10. When the card plate 15 reaches the position of the card hole 11, the spring 17 rebounds to make the telescopic rod 16 push the card hole 11. The plate 15 enters the card hole 11 to realize the installation of the limit plate 12. One side of the limit plate 12 is close to the power supply head 8 to fix it. Similarly, the card plate 15 is pushed again, and the card plate 15 slides out of the card hole 11 to realize the disassembly of the limit plate 12, and the power supply head 8 can be pulled out of the socket. The protective plate can be loaded and unloaded through the card plate 15, the telescopic rod 16, the spring 17, the short plate 10 and the internal card hole 11, and then the power supply head 8 can be fixed, thereby increasing its connection with the connection The stability between the connecting seats 7 can also ensure the normal operation of the motor. When the power supply head 8 and the connecting seat 7 need to be repaired, the threaded sleeve 24 is rotated. Under the action of its internal thread and the external thread of the bolt column, the threaded sleeve 24 slides on the outside of the threaded column 19 to separate the upper protective shell 20, and the connecting seat 7 and the power supply head 8 inside the lower protective shell 6 can be repaired. Similarly, the threaded sleeve 24 is sleeved on the outside of the threaded column 19 and rotated in the opposite direction. The threaded column 19 enters the inside of the threaded sleeve 24 to realize the assembly of the upper protective shell 20 and the lower protective shell 6. During the rotation of the threaded sleeve 24, the retaining ring 23 will rotate inside the retaining ring 22. With the cooperation of the retaining ring 23 and the retaining ring 22, the smoothness of the threaded sleeve 24 during rotation can be increased. The upper protective shell 20 can be assembled and separated by the threaded sleeve 24, the retaining ring 23, and the retaining ring 22 in cooperation with the threaded column 19, thereby reducing the difficulty of the staff in repairing the connecting seat 7 and the power supply head 8.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A connection structure for a three-phase asynchronous motor, comprising a base (1), characterized in that: A motor body (2) is arranged at the upper end of the base (1), a first connecting line (3) is fixedly connected to one side of the motor body (2), an input module (4) is arranged at the other end of the first connecting line (3), a connecting plate (5) is fixedly connected to one side of the base (1), a lower protective shell (6) is arranged at the upper end of the connecting plate (5), a connecting seat (7) is arranged inside the lower protective shell (6), a power supply head (8) is arranged inside the connecting seat (7), a second connecting line (9) is fixedly connected to one side of the power supply head (8), a short plate (10) is fixedly connected to the inside of the lower protective shell (6) near the power supply head (8), and a clamping hole (11) is opened inside the short plate (10); A limiting plate (12) is provided on one side of the short plate (10), a sliding groove (13) is provided inside the limiting plate (12), a sliding block (14) is slidably connected inside the sliding groove (13), a clamping plate (15) is fixedly connected to one side of the sliding block (14), a telescopic rod (16) is provided on the upper end of the clamping plate (15), and a spring (17) is sleeved on the outside of the telescopic rod (16); The front side of the lower protective shell (6) is fixedly connected to a short block (18), the upper end of the short block (18) is fixedly connected to a threaded column (19), and the upper end of the lower protective shell (6) is movably connected to an upper protective shell (20); The front side of the upper protective shell (20) is fixedly connected to a fixing plate (21), the lower end of the fixing plate (21) is fixedly connected to a clamping ring (22), the inside of the clamping ring (22) is movably connected to a clamping ring (23), and the lower end of the clamping ring (23) is fixedly connected to a threaded sleeve (24); The input module (4) and the connection seat (7) are electrically connected; The slide block (14) slides in the slide groove (13) through the clamping plate (15) in cooperation with the telescopic rod (16) and the spring (17); The number of the short blocks (18) is multiple, and they are symmetrically arranged about the center line of the lower protective shell (6); The threaded sleeve (24) cooperates with the clamping ring (22) and the fixing plate (21) to move through the clamping ring (23).

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