A motor multi-stage energy-saving control device and its use method

Abstract

The present invention discloses a multi-stage energy-saving control device for a motor, comprising: a base, on which a motor main body is fixedly provided, and a stable lubricating oil tank is fixedly provided on the base; a rotating device, which is arranged on the output end of the motor main body, and is used to drive the equipment to operate; a releasing device; in the present invention, through the coordinated use of the rotating shaft, the rotating device and the releasing device, when the rotating shaft rotates, the sliding of the connecting shaft in the slide groove can be used to rotate the rotating shaft main body stably and reduce shaking. At the same time, after the speed is increased, the rotating plate will be expanded under the action of centrifugal force to push the force plate, and with the coordinated use of the return spring, the extrusion plate is made to move back and forth inside the release box to release and spray the lubricating oil, thereby effectively improving the rotation efficiency of the rotating shaft under high speed conditions, avoiding serious kinetic energy loss caused by large friction, and improving the energy-saving effect.

Description

Technical Field

[0001] The present invention relates to the technical field of motor energy saving, and in particular to a motor multi-stage energy saving control device and a use method thereof. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its primary function is to generate driving torque. It serves as a power source for electrical appliances and various machines. Generators, represented by the letter G in circuits, convert mechanical energy into electrical energy. Based on their power supply type, they can be divided into DC and AC motors. DC motors are categorized by structure and operating principle into brushless DC motors and brushed DC motors. Brushed DC motors are categorized into permanent magnet DC motors and electromagnetic DC motors. Electromagnetic DC motors are categorized into series-excited DC motors, shunt-excited DC motors, separately-excited DC motors, and compound-excited DC motors. Permanent magnet DC motors are categorized into rare earth permanent magnet DC motors, ferrite permanent magnet DC motors, and alnico permanent magnet DC motors. Frequency conversion technology utilizes motor control principles to control motors through a so-called frequency converter. Motors used for this type of control are called variable frequency motors. Common variable frequency motors include three-phase asynchronous motors, brushless DC motors, brushless AC motors, and switched reluctance motors. Current motor frequency conversion systems mostly use a constant V / F control system, which is characterized by its simple structure and low cost.

[0003] During the use of traditional motors, their speed is fixed and multi-level control is not possible, which creates great limitations. When the motor has multi-level speed, its main rotating shaft is prone to instability. At the same time, the connection of the rotating shaft has low sliding efficiency when used at high speeds and will be subject to greater friction, which will lead to kinetic energy loss and the inability to achieve energy-saving effects. For this reason, we propose a motor multi-level energy-saving control device and its use method to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a motor multi-stage energy-saving control device and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A multi-stage energy-saving control device for a motor, comprising:

[0007] A base, on which a motor body is fixedly mounted, and a stable lubricating oil tank is fixedly mounted;

[0008] A rotating device, which is arranged on the output end of the motor body and is used to drive the device to operate;

[0009] A release device is provided on the stable lubricating oil tank and is used for releasing lubricating oil to lubricate the equipment.

[0010] Preferably, the motor body includes a stabilizing plate fixedly arranged on the top of the base, the stabilizing plate is symmetrically arranged on both sides of the base, a motor is fixedly arranged on the top of the stabilizing plate, a rotating shaft is fixedly arranged at the output end of the motor, the stabilizing lubricating oil tank is sleeved on one side of the output end of the motor, a rotating groove is fixedly arranged on the side wall of the motor, and the rotating shaft extends through the rotating groove to the outside of the motor.

[0011] Preferably, the rotating device includes a rotating rod fixedly arranged on the outer wall of the rotating shaft, a connecting shaft is fixedly arranged on the end of the rotating rod, a rotating plate is fixedly arranged on the outer wall of the connecting shaft, a torsion spring is sleeved on the outer wall of the connecting shaft, and a sliding groove for stabilizing the rotating shaft is provided on the side wall of the motor close to the rotating shaft, and the connecting shaft can slide on the inner wall of the sliding groove.

[0012] Preferably, the release device includes a release box fixedly arranged on the inner wall of the stable lubricating oil tank, an extrusion plate for sucking lubricating oil is movably arranged on the inner wall of the release box, a suction assembly is arranged at the end of the release box close to the stable lubricating oil tank, and an extrusion assembly is arranged at the other end of the release box.

[0013] Preferably, the suction assembly includes a one-way oil inlet pipe fixedly arranged at the end of the release box, and a one-way oil outlet pipe is fixedly arranged on the side wall of the release box.

[0014] Preferably, the extrusion assembly includes a push rod fixedly provided on the side wall of the extrusion plate, a connecting ring is fixedly provided on the side of the motor close to the output end, the push rod passes through the side wall of the release box, the end of the push rod passes through the side wall of the connecting ring, a force plate is fixedly provided on the end of the push rod, and a return spring is sleeved on the outer side wall of the push rod;

[0015] It can be seen that after the rotating plate is unfolded, it will push the force-bearing plate, causing the force-bearing plate to squeeze the return spring, and then push the push rod, causing the push rod to push the squeezing plate, causing the squeezing plate to push out the lubricating oil inside the release box.

[0016] Preferably, one end of the torsion spring is fixedly connected to the rotating plate, and the other end of the torsion spring is fixedly connected to the rotating rod.

[0017] Preferably, the other end of the one-way oil inlet pipe extends to the interior of the stable lubricating oil tank, and the one-way oil inlet pipe is used to release the box to absorb oil. The other end of the one-way oil outlet pipe extends to the interior of the rotating groove, and the one-way oil outlet pipe is used to release lubricating oil to the rotating groove.

[0018] Preferably, one end of the return spring is pressed against the inner side wall of the connecting ring, and the other end of the return spring is pressed against the side wall of the force-bearing plate.

[0019] It can be seen from this that through the coordinated use of the rotating shaft, the rotating device and the releasing device, when the rotating shaft rotates, the connecting shaft slides inside the slide groove, so that the rotating shaft body can be rotated stably and the shaking can be reduced. At the same time, after the speed is increased, the rotating plate will expand under the action of centrifugal force, pushing the force plate. With the coordinated use of the return spring, the extrusion plate moves back and forth inside the release box, releasing and spraying the lubricating oil, effectively improving the rotation efficiency of the rotating shaft under high speed conditions, avoiding serious kinetic energy loss caused by large friction, and improving the energy saving effect.

[0020] A method for using a motor multi-stage energy-saving control device is as follows:

[0021] The rotation of the rotating shaft will cause the rotating rod to rotate, so that the connecting shaft can slide stably inside the sliding groove;

[0022] When the speed is increased, the rotating plate will expand under the action of centrifugal force;

[0023] The unfolded rotating plate continues to rotate, which will cause the rotating plate to intermittently push the force-bearing plate, causing the push rod to push the extrusion plate;

[0024] The pushing of the force-bearing plate and the cooperation with the return spring make the extrusion plate reciprocate inside the release box to spray and release the lubricating oil.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In the present invention, by coordinating the rotating shaft, the rotating device and the releasing device, when the rotating shaft rotates, the connecting shaft slides inside the slide groove, so that the rotating shaft body is rotated stably and the shaking is reduced. At the same time, after the speed is increased, the rotating plate will be expanded under the action of centrifugal force, pushing the force-bearing plate. With the cooperation of the return spring, the extrusion plate moves back and forth inside the release box, releasing and spraying the lubricating oil, effectively improving the rotation efficiency of the rotating shaft under high speed conditions, avoiding serious kinetic energy loss caused by large friction, and improving the energy-saving effect.

[0027] 2. In the present invention, through the coordinated use between the rotating plate and the release device, after the rotating plate is unfolded, it will push the force-bearing plate, so that the force-bearing plate squeezes the return spring, and then pushes the push rod, so that the push rod pushes the extrusion plate, so that the extrusion plate pushes out the lubricating oil inside the release box, and releases it through the one-way oil outlet pipe to spray it into the interior of the rotating groove, so that the friction coefficient between the rotating groove and the rotating shaft is reduced; when the rotating plate leaves the surface of the force-bearing plate, the force-bearing plate will be quickly restored by the elastic force of the return spring, so that the force-bearing plate drives the push rod to move inward, and then the push rod pulls the extrusion plate, so that the extrusion plate restores, so that negative pressure is formed inside the release box, and oil is sucked into the release box through the one-way oil inlet pipe for subsequent use, so that the lubricating oil can be evenly sprayed on the connection between the rotating shaft and the rotating groove under high speed, so that the lubrication effect is more sufficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural stereogram of a motor multi-stage energy-saving control device and a method of using the same proposed by the present invention;

[0029] Figure 2 This is a structural back view of a motor multi-stage energy-saving control device and a method of using the same proposed by the present invention;

[0030] Figure 3 This is a front view schematic diagram of the structure of a motor multi-stage energy-saving control device and its use method proposed by the present invention;

[0031] Figure 4 A cross-sectional view of the structure of a multi-stage energy-saving control device for a motor and a method of using the same proposed by the present invention;

[0032] Figure 5 A side cross-sectional view of the structure of a motor multi-stage energy-saving control device and a method of using the same proposed by the present invention;

[0033] Figure 6 This is an enlarged structural diagram of a motor multi-stage energy-saving control device and a method of use thereof A proposed by the present invention;

[0034] Figure 7 This is an enlarged structural diagram of a motor multi-stage energy-saving control device and its use method B proposed by the present invention;

[0035] Figure 8 This is an enlarged structural diagram of a motor multi-stage energy-saving control device and its use method C proposed by the present invention.

[0036] In the figure: 1. Base; 2. Stabilizing plate; 3. Motor; 4. Lubricating oil tank; 5. Rotating shaft; 6. Rotating groove; 7. Rotating rod; 8. Connecting shaft; 9. Rotating plate; 10. Torsion spring; 11. Slide groove; 12. Connecting ring; 13. Release box; 14. Extrusion plate; 15. One-way oil inlet pipe; 16. One-way oil outlet pipe; 17. Push rod; 18. Return spring; 19. Force plate. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Reference Figure 1-8 , a motor multi-stage energy-saving control device, comprising:

[0039] A base 1 is provided with a motor body fixedly mounted on the base 1, a stable lubricating oil tank 4 is fixedly mounted on the base 1, the motor body comprises a stable plate 2 fixedly mounted on the top of the base 1, the stable plates 2 are symmetrically arranged on both sides of the base 1, a motor 3 is fixedly mounted on the top of the stable plate 2, so that the motor 3 has better stability during use, a rotating shaft 5 is fixedly mounted on the output end of the motor 3, the stable lubricating oil tank 4 is sleeved on one side of the output end of the motor 3, a rotating groove 6 is fixedly mounted on the side wall of the motor 3, and the rotating shaft 5 passes through the rotating groove 6 and extends to the outside of the motor 3;

[0040] A rotating device is provided on the output end of the motor body. The rotating device is used to drive the device to operate. The rotating device includes a rotating rod 7 fixedly provided on the outer wall of the rotating shaft 5. A connecting shaft 8 is fixedly provided on the end of the rotating rod 7. A rotating plate 9 is fixedly provided on the outer wall of the connecting shaft 8. A torsion spring 10 is sleeved on the outer wall of the connecting shaft 8. One end of the torsion spring 10 is fixedly connected to the rotating plate 9, and the other end of the torsion spring 10 is fixedly connected to the rotating rod 7. A slide groove 11 for stabilizing the rotating shaft 5 is opened on the side wall of the motor 3 close to the rotating shaft 5, and the connecting shaft 8 can slide on the inner wall of the slide groove 11;

[0041] The rotation of the rotating shaft 5 will cause the rotating rod 7 to rotate. When the rotating rod 7 rotates, the connecting shaft 8 will slide inside the sliding groove 11, so as to stably support the rotating shaft 5, avoid shaking, and improve the stability of the rotating shaft 5. When the rotating shaft 5 increases the speed and rotates continuously, the rotating plate 9 will squeeze the torsion spring 10 under the action of centrifugal force, so that the rotating plate 9 will expand;

[0042] A release device is provided on the stable lubricating oil tank 4. The release device is used to release lubricating oil to the equipment. The release device includes a release box 13 fixedly provided on the inner wall of the stable lubricating oil tank 4. An extrusion plate 14 for sucking lubricating oil is movably provided on the inner wall of the release box 13. A suction assembly is provided at the end of the release box 13 close to the stable lubricating oil tank 4. The suction assembly includes a one-way oil inlet pipe 15 fixedly provided at the end of the release box 13. A one-way oil outlet pipe 16 is fixedly provided on the side wall of the release box 13. The other end of the one-way oil inlet pipe 15 extends to the interior of the stable lubricating oil tank 4. The one-way oil inlet pipe 15 is used to suck oil from the release box 13. The other end of the one-way oil outlet pipe 16 extends to the interior of the rotating groove 6. The one-way oil outlet pipe 16 is used to release lubricating oil to the rotating groove 6.

[0043] The other end of the release box 13 is provided with an extrusion assembly, which includes a push rod 17 fixedly arranged on the side wall of the extrusion plate 14. A connecting ring 12 is fixedly provided on the side of the motor 3 near the output end. The push rod 17 passes through the side wall of the release box 13, and the end of the push rod 17 passes through the side wall of the connecting ring 12. A force plate 19 is fixedly provided on the end of the push rod 17. A return spring 18 is sleeved on the outer side wall of the push rod 17. One end of the return spring 18 is tightly abutted against the inner side wall of the connecting ring 12, and the other end of the return spring 18 is tightly abutted against the side wall of the force plate 19.

[0044] When the unfolded rotating plate 9 rotates, it will push the force-bearing plate 19, so that the force-bearing plate 19 squeezes the return spring 18, and then pushes the push rod 17, so that the push rod 17 pushes the extrusion plate 14, so that the extrusion plate 14 pushes the lubricating oil inside the release box 13 out, and releases it through the one-way oil outlet pipe 16 to spray into the inside of the rotating groove 6, so that the friction coefficient between the rotating groove 6 and the rotating shaft 5 is reduced; when the rotating plate 9 leaves the surface of the force-bearing plate 19, the force-bearing plate 19 will be quickly restored by the elastic force of the return spring 18, so that the force-bearing plate 19 drives the push rod 17 to move inward, and then the push rod 17 pulls the extrusion plate 14, so that the extrusion plate 14 is restored, so that negative pressure is formed in the release box 13, and oil is sucked into the release box 13 through the one-way oil inlet pipe 15 for subsequent use, so that the lubricating oil can be evenly sprayed on the connection between the rotating shaft 5 and the rotating groove 6 at high speed, so that the lubrication effect is more sufficient;

[0045] By cooperating with the rotating shaft 5, the rotating device and the releasing device, when the rotating shaft 5 rotates, the connecting shaft 8 slides inside the slide groove 11, thereby stabilizing the rotation of the rotating shaft 5 and reducing shaking. At the same time, after the speed is increased, the rotating plate 9 will be expanded under the action of centrifugal force, pushing the force-bearing plate 19. With the cooperation of the return spring 18, the extrusion plate 14 moves back and forth inside the release box 13, releasing and spraying the lubricating oil, effectively improving the rotation efficiency of the rotating shaft 5 under high speed conditions, avoiding serious kinetic energy loss caused by large friction, and improving energy saving effects.

[0046] Frequency conversion technology uses the principles of motor control to control the motor through a frequency converter.

[0047] Common variable frequency motors include: three-phase asynchronous motors, DC brushless motors, AC brushless motors and switched reluctance motors.

[0048] Control principle of variable frequency motor:

[0049] The control strategies for variable frequency motors are usually: constant torque control at base speed, constant power control above base speed, and weak magnetic control in the ultra-high speed range.

[0050] Base speed: Since a motor generates back EMF when it is running, and the magnitude of that back EMF is generally proportional to the speed, when the motor reaches a certain speed, the speed at which the back EMF is equal to the applied voltage is called the base speed.

[0051] Constant torque control: The motor operates at base speed under constant torque control. The motor's back electromotive force (E) is proportional to the motor's speed. Furthermore, the motor's output power is proportional to the product of the motor's torque and speed. Therefore, the motor's power is proportional to the speed.

[0052] Constant power control: When the motor exceeds base speed, the motor's excitation current is adjusted to keep the back EMF roughly constant, thereby increasing the motor's speed. At this point, the motor's output power remains roughly constant, but the motor torque decreases inversely with the speed.

[0053] Weak magnetic control: When the motor speed exceeds a certain value, the excitation current is already very small and can basically no longer be adjusted. At this time, it enters the weak magnetic control stage.

[0054] The speed regulation and control of electric motors have greatly improved the degree of mechanical automation and production efficiency, saved energy, improved product qualification rate and product quality, increased the capacity of power supply systems, miniaturized equipment, and increased comfort. They are rapidly replacing traditional mechanical speed regulation and DC speed regulation solutions. Variable frequency speed regulation has become the mainstream speed regulation solution and can be widely used in stepless speed transmission in various industries.

[0055] Motor 3 has the following characteristics:

[0056] B-class temperature rise design, F-class insulation manufacturing, the use of polymer insulation materials and vacuum pressure impregnation manufacturing process as well as the use of special insulation structure, greatly improve the insulation withstand voltage and mechanical strength of the electrical winding, which is sufficient to withstand the high-speed operation of the motor and resist the high-frequency current impact of the inverter and the damage to the insulation caused by voltage.

[0057] The balance quality is high, and the vibration level is R level (reduced vibration level). The mechanical parts are processed with high precision and use special high-precision bearings, which can run at high speed.

[0058] Compared with traditional variable-frequency motors, these motors offer a wider speed range and higher design quality. Their special magnetic field design further suppresses higher-order harmonic magnetic fields to meet the design requirements of wideband, energy saving, and low noise. They feature wide-range constant torque and power speed regulation, smooth speed regulation, and no torque ripple.

[0059] It has good parameter matching with all kinds of frequency converters. With vector control, it can achieve full torque at zero speed, high torque at low frequency and high precision speed control, position control and fast dynamic response control to obtain precise parking, and high precision speed control through speed closed-loop control.

[0060] The speed is easy to adjust and it is energy-saving. The AC motor has a simple structure, small size, small inertia, low cost, easy maintenance and durability. It can expand capacity, achieve high speed and high voltage operation, and can achieve soft starting and fast braking. It is spark-free, explosion-proof and has strong environmental adaptability.

[0061] A method for using a motor multi-stage energy-saving control device is as follows:

[0062] The rotation of the rotating shaft 5 will cause the rotating rod 7 to rotate, so that the connecting shaft 8 can slide stably inside the sliding groove 11;

[0063] When the speed is increased, the rotating plate 9 will be expanded under the action of centrifugal force;

[0064] The unfolded rotating plate 9 continues to rotate, which will cause the rotating plate 9 to intermittently push the force-bearing plate 19 so that the push rod 17 pushes the extrusion plate 14;

[0065] The force-bearing plate 19 and the return spring 18 push the extrusion plate 14 to reciprocate inside the release box 13 to spray and release the lubricating oil.

[0066] When the rotating shaft 5 is in use, the rotating rod 7 rotates, and when the rotating rod 7 rotates, the connecting shaft 8 slides inside the sliding groove 11, thereby stably supporting the rotating shaft 5 and avoiding shaking. When the rotating shaft 5 increases the speed and rotates continuously, the rotating plate 9 squeezes the torsion spring 10 under the action of centrifugal force, so that the rotating plate 9 is expanded. When the expanded rotating plate 9 rotates, it pushes the force-bearing plate 19, so that the force-bearing plate 19 squeezes the return spring 18, and then pushes the push rod 17, so that the push rod 17 pushes the squeezing plate 14, so that the squeezing plate 14 pushes the lubricating oil inside the release box 13 out, and releases it through the one-way oil outlet pipe 16 to spray into the inside of the rotating groove 6, so that the friction coefficient between the rotating groove 6 and the rotating shaft 5 is reduced.

[0067] When the rotating plate 9 leaves the surface of the force-bearing plate 19, the force-bearing plate 19 will be quickly restored by the elastic force of the return spring 18, so that the force-bearing plate 19 drives the push rod 17 to move inward, and then the push rod 17 pulls the extrusion plate 14, so that the extrusion plate 14 returns, so that negative pressure is formed inside the release box 13, and oil is sucked into the release box 13 through the one-way oil inlet pipe 15 for subsequent use.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0070] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A multi-stage energy-saving control device for a motor, characterized in that: include: A base (1), a motor body being fixedly mounted on the base (1), and a stable lubricating oil tank (4) being fixedly mounted on the base (1); A rotating device, which is arranged on the output end of the motor body and is used to drive the device to operate; A release device, the release device being arranged on the stable lubricating oil tank (4), and the release device being used to release lubricating oil to the equipment; The motor body comprises a stabilizing plate (2) fixedly arranged on the top of the base (1), the stabilizing plate (2) being symmetrically arranged on both sides of the base (1), a motor (3) being fixedly arranged on the top of the stabilizing plate (2), a rotating shaft (5) being fixedly arranged at the output end of the motor (3), the stabilizing lubricating oil tank (4) being sleeved on one side of the output end of the motor (3), a rotating groove (6) being fixedly arranged on the side wall of the motor (3), and the rotating shaft (5) passing through the rotating groove (6) and extending to the outside of the motor (3); The rotating device comprises a rotating rod (7) fixedly arranged on the outer side wall of the rotating shaft (5), a connecting shaft (8) fixedly arranged at the end of the rotating rod (7), a rotating plate (9) fixedly arranged on the outer side wall of the connecting shaft (8), a torsion spring (10) sleeved on the outer side wall of the connecting shaft (8), a sliding groove (11) for stabilizing the rotating shaft (5) is provided on the side wall of the motor (3) close to the rotating shaft (5), and the connecting shaft (8) can slide on the inner side wall of the sliding groove (11); The release device comprises a release box (13) fixedly arranged on the inner side wall of the stable lubricating oil tank (4), an extrusion plate (14) for sucking lubricating oil being movably arranged on the inner side wall of the release box (13), a suction component being arranged at the end of the release box (13) close to the stable lubricating oil tank (4), and an extrusion component being arranged at the other end of the release box (13); The extrusion assembly includes a push rod (17) fixedly arranged on the side wall of the extrusion plate (14); a connecting ring (12) is fixedly arranged on the side of the motor (3) close to the output end; the push rod (17) passes through the side wall of the release box (13); the end of the push rod (17) passes through the side wall of the connecting ring (12); a force plate (19) is fixedly arranged at the end of the push rod (17); and a return spring (18) is sleeved on the outer side wall of the push rod (17).

2. A motor multi-stage energy-saving control device according to claim 1, characterized in that: The suction assembly comprises a one-way oil inlet pipe (15) fixedly arranged at the end of the release box (13), and a one-way oil outlet pipe (16) fixedly arranged on the side wall of the release box (13).

3. A motor multi-stage energy-saving control device according to claim 2, characterized in that: One end of the torsion spring (10) is fixedly connected to the rotating plate (9), and the other end of the torsion spring (10) is fixedly connected to the rotating rod (7).

4. A motor multi-stage energy-saving control device according to claim 3, characterized in that: The other end of the one-way oil inlet pipe (15) extends to the interior of the stable lubricating oil tank (4), and the one-way oil inlet pipe (15) is used to release the box (13) to absorb oil. The other end of the one-way oil outlet pipe (16) extends to the interior of the rotating groove (6), and the one-way oil outlet pipe (16) is used to release lubricating oil to the rotating groove (6).

5. The multi-stage energy-saving control device for a motor according to claim 4, characterized in that: One end of the return spring (18) is pressed against the inner side wall of the connecting ring (12), and the other end of the return spring (18) is pressed against the side wall of the force-bearing plate (19).

6. A method for using a motor multi-stage energy-saving control device according to any one of claims 1 to 5, characterized in that: The method is as follows: The rotation of the rotating shaft (5) causes the rotating rod (7) to rotate, so that the connecting shaft (8) slides stably inside the sliding groove (11); When the rotation speed is increased, the rotating plate (9) will be expanded under the action of centrifugal force; The unfolded rotating plate (9) continues to rotate, causing the rotating plate (9) to intermittently push the force-bearing plate (19), causing the push rod (17) to push the extrusion plate (14); The pushing of the force-bearing plate (19) and the cooperation with the return spring (18) cause the extrusion plate (14) to reciprocate inside the release box (13) to spray and release the lubricating oil.

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