Speed-adjustable three-phase motor

Abstract

The utility model provides a speed-adjustable three-phase motor which comprises a base, the top of the base is fixedly provided with a motor main body through a screw, the top of the base is provided with two sliding grooves which are arranged at the two sides of the outer part of the motor main body, and the two sliding grooves are arranged in the motor main body. A protective shell sliding in the length direction of the sliding groove is slidably mounted at the top of the base through the sliding groove. According to the speed-adjustable three-phase motor provided by the utility model, after the motor main body is installed, the protective shell and the base are installed through the sliding grooves, then the protective plate and the protective shell are installed through the limiting grooves, and the protective shell and the protective plate effectively protect the motor main body, so that the motor main body is prevented from being damaged due to collision; the safety is greatly improved, the motor main body can generate high temperature after working for a long time, heat can be effectively dissipated through the heat dissipation holes, wind is generated through working of the fan, the heat dissipation effect of the motor main body is further improved, and the service life of the motor main body is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of three-phase motors, in particular to a speed-adjustable three-phase motor. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor. It is a type of motor that is powered by a 380V three-phase AC current (phase difference of 120 degrees) at the same time. Since the rotor and stator rotating magnetic field of the three-phase asynchronous motor rotate in the same direction and at different speeds, there is a slip rate, so it is called a three-phase asynchronous motor. The speed of the rotor of the three-phase asynchronous motor is lower than the speed of the rotating magnetic field. The rotor winding generates electromotive force and current due to the relative motion between the rotor and the magnetic field, and interacts with the magnetic field to generate electromagnetic torque, realizing energy conversion. Adjusting the resistance of the rheostat can improve the starting performance of the motor and adjust the speed of the motor.

[0003] However, the three-phase motors in the existing market have poor protection functions during use, which makes them easily damaged by being squeezed or collided with external components. In addition, the heat dissipation function of the three-phase motors is poor, and the long-term working temperature rises and reduces the service life.

[0004] Therefore, it is necessary to provide a three-phase motor with adjustable speed to solve the above technical problems. Summary of the invention

[0005] The utility model provides a speed-adjustable three-phase motor, which solves the problems that the three-phase motors in the existing market have poor protection functions during use, resulting in the three-phase motors being easily damaged by being squeezed or collided with external components, and the three-phase motors have poor heat dissipation functions, resulting in the temperature rising for a long time and reducing the service life.

[0006] The utility model provides a speed-adjustable three-phase motor, comprising: a base, a motor body is fixedly installed on the top of the base by screws, sliding grooves are opened on the top of the base and on both sides of the outside of the motor body, and the number of the sliding grooves is two, a protective shell sliding along the length direction of the sliding groove is slidably installed on the top of the base through the sliding groove, a fan is equidistantly embedded and installed on the top of the protective shell, and the number of the fans is multiple, a limiting groove is opened on one side of the top of the protective shell, a protective plate is slidably installed on the top of the protective shell through the limiting groove, and heat dissipation holes are opened on both sides of the outside of the protective shell at equal distances, and the number of the heat dissipation holes is multiple.

[0007] Preferably, a first mounting groove is opened on one side of the top of the base, and the number of the first mounting grooves is two, and adjustment blocks are rotatably installed inside the two first mounting grooves.

[0008] Preferably, an arc groove is provided on one side of the outer side of the two adjustment blocks, a fixed shaft is fixedly installed between the inner sides of the two first installation grooves, the two fixed shafts pass through the two adjustment blocks respectively through the two arc grooves, and a spring is fixedly installed between the bottom of the adjustment block and the bottom of the first installation groove.

[0009] Preferably, a second mounting groove is provided on the other side of the top of the base, and a screw rod is rotatably mounted inside the second mounting groove via a bearing.

[0010] Preferably, one end of the screw rod passes through the base and extends to the outside, and a keyway at one end of the screw rod is connected to a crank.

[0011] Preferably, a clamping plate is meshingly connected to the outside of the screw rod, and the clamping plate is slidably mounted on the base along the length direction of the screw rod through a second mounting groove, and a soft pad is adhesively connected to one side of the outside of the clamping plate.

[0012] Compared with the related art, the speed-adjustable three-phase motor provided by the utility model has the following beneficial effects:

[0013] After the motor body is installed, the protective shell and the base are installed through the slide groove, and then the protective plate and the protective shell are installed through the limit groove. The protective shell and the protective plate effectively protect the motor body to prevent the motor body from being damaged by impact, which greatly improves the safety. The motor body will generate a higher temperature due to long-term work. The heat can be effectively dissipated through the heat dissipation holes, and the wind is generated by the work of the fan, which further improves the heat dissipation effect of the motor body and extends the service life of the motor body. The motor body is a three-phase asynchronous motor, and the speed regulation function is one of its advantages. The principle is an existing mature technical means and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a preferred embodiment of a speed-adjustable three-phase motor provided by the utility model;

[0015] Figure 2 for Figure 1 The schematic diagram of the adjustment block installation structure is shown;

[0016] Figure 3 for Figure 1 Schematic diagram of the protection plate installation structure.

[0017] In the figure: 1. base; 2. motor body; 3. slide groove; 4. protective shell; 5. fan; 6. limit groove; 7. protective plate; 8. heat dissipation hole; 9. first mounting groove; 10. adjustment block; 11. arc groove; 12. fixed shaft; 13. spring; 14. second mounting groove; 15. screw rod; 16. crank; 17. splint; 18. cushion. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0019] Embodiment: A three-phase motor with adjustable speed, such as Figure 1-Figure 3 As shown, it comprises: a base 1, a motor body 2 is fixedly installed on the top of the base 1 by screws, a slide groove 3 is opened on the top of the base 1 and on both sides of the outside of the motor body 2, and the number of the slide grooves 3 is two, a protective shell 4 slidingly installed along the length direction of the slide groove 3 is slidably installed on the top of the base 1 through the slide groove 3, a fan 5 is equidistantly embedded and installed on the top of the protective shell 4, and the number of the fan 5 is multiple, a limiting groove 6 is opened on one side of the top of the protective shell 4, a protective plate 7 is slidably installed on the top of the protective shell 4 through the limiting groove 6, and heat dissipation holes 8 are opened on both sides of the outside of the protective shell 4 at equal distances, and the number of the heat dissipation holes 8 is multiple. After the motor body 2 is installed, The protective shell 4 is installed with the base 1 through the slide groove 3, and then the protective plate 7 is installed with the protective shell 4 through the limit groove 6. The protective shell 4 and the protective plate 7 effectively protect the motor body 2 to prevent the motor body 2 from being damaged by impact, which greatly improves the safety. The motor body 2 will generate a higher temperature when working for a long time. The heat dissipation holes 8 can effectively dissipate the heat, and the wind is generated by the operation of the fan 5, which further improves the heat dissipation effect of the motor body 2 and extends the service life of the motor body 2. The motor body 2 is a three-phase asynchronous motor, and the speed regulation function is one of its advantages. The principle is an existing mature technical means and will not be repeated here.

[0020] A first mounting groove 9 is provided on one side of the top of the base 1, and the number of the first mounting grooves 9 is two. Adjustment blocks 10 are rotatably installed inside the two first mounting grooves 9. Arc grooves 11 are provided on one side of the outer sides of the two adjustment blocks 10. Fixed shafts 12 are fixedly installed between the inner sides of the two first mounting grooves 9. The two fixed shafts 12 pass through the two adjustment blocks 10 respectively through the two arc grooves 11. A spring 13 is fixedly installed between the bottom of the adjustment block 10 and the bottom of the first mounting groove 9. When installing the protective shell 4, align the protective shell 4 with the slide groove 3, move the protective shell 4, and the protective shell 4 contacts the adjustment block 10. The shell 4 continues to move, and the adjusting block 10 moves toward the inside of the first installation groove 9. Due to the cooperation between the fixed shaft 12 and the arc groove 11, the adjusting block 10 moves along the trajectory of the arc groove 11, and the spring 13 is compressed. After the protective shell 4 is installed, the contact between the protective shell 4 and the adjusting block 10 is released. Due to the reset effect of the spring 13, the adjusting block 10 rotates upward along the trajectory of the arc groove 11, thereby blocking the protective shell 4. The structure is simple and convenient for installing the protective shell 4. When the protective shell 4 needs to be removed, the two adjusting blocks 10 are manually moved toward the inside of the first installation groove 9, and the protective shell 4 is conveniently slid and removed.

[0021] A second mounting groove 14 is provided on the other side of the top of the base 1, and a screw rod 15 is rotatably installed inside the second mounting groove 14 through a bearing. One end of the screw rod 15 passes through the base 1 and extends to the outside, and a keyway at one end of the screw rod 15 is connected to a crank 16, and a splint 17 is meshedly connected to the outside of the screw rod 15. The splint 17 is slidably installed with the base 1 along the length direction of the screw rod 15 through the second mounting groove 14, and a soft pad 18 is glued to one side of the splint 17. When the crank 16 is turned, the screw rod 15 is driven to rotate. The rotation of the screw rod 15 causes the splint 17 to slide along the length direction of the screw rod 15, so that the soft pad 18 contacts one side of the protective shell 4, thereby effectively fixing the protective shell 4. The structure is simple and easy to use.

[0022] The working principle of a speed-adjustable three-phase motor provided by the utility model is as follows:

[0023] Step 1: After the motor body 2 is installed, the protective shell 4 and the base 1 are installed through the slide groove 3, and then the protective plate 7 and the protective shell 4 are installed through the limit groove 6. The protective shell 4 and the protective plate 7 effectively protect the motor body 2 to prevent the motor body 2 from being damaged by impact, which greatly improves the safety. The motor body 2 will generate a higher temperature due to long-term operation. The heat can be effectively dissipated through the heat dissipation holes 8, and the wind is generated by the operation of the fan 5, which further improves the heat dissipation effect of the motor body 2 and extends the service life of the motor body 2. The motor body 2 is a three-phase asynchronous motor, and the speed regulation function is one of its advantages. The principle is an existing mature technical means and will not be repeated here.

[0024] The second step: when installing the protective shell 4, align the protective shell 4 with the slide groove 3, move the protective shell 4, the protective shell 4 contacts the adjusting block 10, the protective shell 4 continues to move, and the adjusting block 10 moves toward the inside of the first installation groove 9. Due to the cooperation between the fixed shaft 12 and the arc groove 11, the adjusting block 10 moves along the trajectory of the arc groove 11, and the spring 13 is compressed. After the protective shell 4 is installed, the contact between the protective shell 4 and the adjusting block 10 is released. Due to the reset effect of the spring 13, the adjusting block 10 rotates upward along the trajectory of the arc groove 11, thereby blocking the protective shell 4. The structure is simple and convenient for installing the protective shell 4. When the protective shell 4 needs to be disassembled, the two adjusting blocks 10 are manually moved toward the inside of the first installation groove 9. At this time, it is convenient to slide and remove the protective shell 4, turn the crank 16, and the crank 16 drives the screw rod 15 to rotate. The screw rod 15 rotates so that the splint 17 slides along the length direction of the screw rod 15, so that the cushion 18 contacts with one side of the protective shell 4, effectively fixing the protective shell 4, with a simple structure and convenient use.

[0025] Finally, it should be pointed out that the above embodiments are only representative examples of the present utility model. Obviously, the present utility model is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model should be considered to belong to the protection scope of the present utility model.

Claims

1. A three-phase motor with adjustable speed, comprising: A base (1), characterized in that: a motor body (2) is fixedly mounted on the top of the base (1) by screws, a slide groove (3) is provided on the top of the base (1) and on both sides of the outside of the motor body (2), and the number of the slide grooves (3) is two, a protective shell (4) is slidably mounted on the top of the base (1) through the slide groove (3) and slides along the length direction of the slide groove (3), a fan (5) is equidistantly embedded in the top of the protective shell (4), and the number of the fans (5) is multiple, a limiting groove (6) is provided on one side of the top of the protective shell (4), a protective plate (7) is slidably mounted on the top of the protective shell (4) through the limiting groove (6), and heat dissipation holes (8) are equidistantly provided on both sides of the outside of the protective shell (4), and the number of the heat dissipation holes (8) is multiple.

2. The speed-adjustable three-phase motor according to claim 1, characterized in that: A first mounting groove (9) is provided on one side of the top of the base (1), and there are two first mounting grooves (9), and adjustment blocks (10) are rotatably mounted inside the two first mounting grooves (9).

3. The speed-adjustable three-phase motor according to claim 2, characterized in that: An arc groove (11) is provided on one side of the outside of the two adjustment blocks (10); a fixed shaft (12) is fixedly installed between the two sides of the inside of the two first installation grooves (9); the two fixed shafts (12) pass through the two adjustment blocks (10) respectively through the two arc grooves (11); and a spring (13) is fixedly installed between the bottom of the adjustment block (10) and the bottom of the inside of the first installation groove (9).

4. The speed-adjustable three-phase motor according to claim 3, characterized in that: A second installation groove (14) is provided on the other side of the top of the base (1), and a screw rod (15) is rotatably mounted inside the second installation groove (14) via a bearing.

5. The speed-adjustable three-phase motor according to claim 4, characterized in that: One end of the screw rod (15) passes through the base (1) and extends to the outside, one end of the screw rod (15) is keyed to a crank (16), the outside of the screw rod (15) is meshed with a clamping plate (17), the clamping plate (17) is slidably mounted on the base (1) along the length direction of the screw rod (15) through a second mounting groove (14), and a soft pad (18) is glued to one side of the outside of the clamping plate (17).

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