Synchronous reluctance motor

Abstract

The utility model discloses a synchronous reluctance motor. The synchronous reluctance motor comprises a synchronous reluctance motor main body and a motor main shaft, the synchronous reluctance motor has the beneficial effects that the brake disc and the brake disc are adopted, when the motor main shaft is braked, the electromagnet main body is electrified to attract the movable disc to move towards the synchronous reluctance motor main body, so that the brake disc is driven to be close to and attached to the brake disc, the motor main shaft rotates to drive the insertion groove to coincide with the insertion strip, and the insertion strip is inserted into the insertion groove; in the braking process, the speed of the motor main shaft is rapidly reduced through frictional resistance until the motor main shaft stops rotating, the inertia force effect is reduced, the motor main shaft is prevented from being damaged, the ceramic friction pad is not prone to heating, long-time frictional resistance can be provided, the problem that kinetic energy is large due to the fact that the rotating speed of the motor main shaft is too high is solved, use stability is high, and practicability is high. The problem that a traditional buffering mechanism is limited in buffering effect is solved, braking performance and working stability are improved, and damage to the synchronous reluctance motor body and the motor spindle is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a synchronous reluctance motor. Background Art

[0002] The synchronous reluctance motor is a new type of AC motor that follows the principle of minimum magnetic resistance path closure and generates magnetic pull to drive the motor to rotate through the change of magnetic resistance caused by the rotor at different positions. It has the advantages of simple structure, durability, high efficiency, wide speed regulation range and low cost.

[0003] After searching, it was found that the publication number is CN217590488U, and the name is a high-speed synchronous reluctance motor. The application proposes that most of the current synchronous reluctance motors use iron brake pads to brake the motor shaft during braking. Therefore, during the braking process, the brake pads and the motor shaft will wear each other, resulting in different degrees of damage to both. The movable block can be driven to move upward by the electric telescopic column, so that the connecting rod has a tendency to move upward, but because the two sides of the connecting rod are respectively connected to the adjusting plate and the movable block by axle pins, the connecting rod will rotate as the movable block moves upward, and the length of the connecting rod is fixed, so the upward movement of the movable block will make the angle between the connecting rod and the movable block gradually approach 90 degrees. At the same time, the change in the angle between the connecting rod and the movable block will cause the angle between the fixed seat and the adjusting plate to change accordingly, so that it will also gradually Gradually approaching 90 degrees, thereby realizing the function of a pair of brake pads approaching each other to brake the output shaft, and springs are connected between the two ends of the brake pad and the slots, so it can buffer the impact force of the output shaft on the brake pad during braking, thereby reducing the damage to the output shaft and the brake pad caused by the impact force, so as to extend the service life of the output shaft and the brake pad. However, this application adopts the form of card-in braking, and a large impact will be generated at the moment when the high-speed rotating main shaft contacts the brake pad. Although a spring is used as a buffering mechanism, the buffering effect of the spring is extremely limited and the buffering distance is also very short. When the main shaft speed is too high and the kinetic energy is large, it is very easy to cause the spring to be compressed to the limit, thereby transmitting the impact force to the electric telescopic column, causing the electric telescopic column to be deformed under force, affecting the braking performance and service life, and further improvements can be made.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a synchronous reluctance motor having the advantages of higher braking efficiency, large buffer limit and extended service life, thereby solving the problems in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] In order to achieve the above advantages of higher braking efficiency, greater buffering limit and longer service life, the specific technical solutions adopted by the utility model are as follows:

[0009] A synchronous reluctance motor comprises a synchronous reluctance motor body and a motor main shaft, wherein the motor main shaft is installed at the output end of the synchronous reluctance motor body, and an electromagnet bin is fixedly installed on the outer surface of the front end cover of the synchronous reluctance motor body on the outside of the motor main shaft, and the electromagnet body is arranged in an annular manner inside the electromagnet bin, and a guide rod is fixedly arranged in an annular manner on the outer surface of the front end cover of the synchronous reluctance motor body on the outside of the electromagnet bin, and a movable disk is slidably sleeved on the surface of the guide rod, and an inner groove is opened on one side surface of the movable disk, and an edge groove is opened on the inner wall of the inner groove, and a brake disc is rotatably connected to the inner groove, and an edge ring is integrally connected to the outer edge surface of the brake disc, and the edge ring is inserted into the edge groove and rotatably connected to the edge groove, a ceramic friction pad is fixedly connected to the surface of the brake disc on one side surface located in the inner groove, and the other side surface of the ceramic friction pad abuts against the inner groove, and an insertion strip is integrally opened on the other side surface of the brake disc, a brake disc is fixedly connected to the outer surface of the motor main shaft, and the brake disc is located between the electromagnet bin and the brake disc, and a slot is opened on one side surface of the brake disc corresponding to the insertion strip.

[0010] Furthermore, a guide hole is formed on the surface of the movable plate outside the inner groove, and the guide rod passes through the guide hole and is slidably connected to the guide hole.

[0011] Furthermore, a spring is sleeved on the outer side of the guide rod, and two ends of the spring are respectively fixedly connected to the moving disk and the front end cover of the synchronous reluctance motor body.

[0012] Furthermore, the motor main shaft, movable disc, brake disc and brake disc are all coaxially arranged.

[0013] Furthermore, there are a plurality of slots and inserting strips distributed at equal angles along the central axis of the motor main shaft, and the size of the slots is larger than the size of the inserting strips.

[0014] Furthermore, there are a plurality of guide rods distributed at equal angles along the central axis of the motor main shaft, and the guide rods are smooth round rods.

[0015] Furthermore, the inner wall of the inner groove is roughened.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a synchronous reluctance motor, which has the following beneficial effects:

[0018] (1) The utility model adopts a brake disc and a brake disc. When braking the motor spindle, the electromagnet body is energized to attract the moving disc to move toward the synchronous reluctance motor body, thereby driving the brake disc to approach and fit with the brake disc. The rotation of the motor spindle drives the slot and the insert strip to overlap, and the insert strip is inserted into the slot. Due to inertia, the brake disc will rotate with the brake disc. At this time, the ceramic friction pad located on the other side of the brake disc generates sliding friction with the inner wall of the inner groove, and brakes quickly through a large friction force, thereby braking the motor spindle. During the braking process, the motor spindle is rapidly decelerated by friction resistance until it stops rotating, reducing the effect of inertia and avoiding damage to the motor spindle. The ceramic friction pad is not easy to heat up and can provide long-term friction resistance, avoiding the problem of large kinetic energy generated by excessive motor spindle speed. It has high stability in use and avoids the problem of limited buffering effect of traditional buffer mechanisms. It improves braking performance and working stability, and effectively reduces damage to the synchronous reluctance motor body and motor spindle.

[0019] (2) The utility model adopts an electromagnet bin, in which the electromagnet body is arranged in a ring shape. After power is turned on, magnetic force is generated quickly to attract the moving disk to move. The action is rapid, thereby improving the braking efficiency and speed. At the same time, the electromagnet body does not contact the brake disk and the moving disk, and is not subjected to force during operation, thereby avoiding deformation or damage due to force. The utility model has high stability in use and a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a synchronous reluctance motor proposed by the utility model;

[0022] Figure 2 It is a schematic diagram of the external structure of the mobile disk proposed by the utility model;

[0023] Figure 3 It is a schematic diagram of the back elevation structure of the brake disc proposed by the utility model;

[0024] Figure 4 It is a structural schematic diagram of the brake disc proposed by the utility model.

[0025] In the figure:

[0026] 1. Synchronous reluctance motor body; 2. Electromagnet compartment; 3. Electromagnet body; 4. Moving disk; 5. Brake disk; 6. Slot; 7. Guide rod; 8. Spring; 9. Inner groove; 10. Brake disk; 11. Ceramic friction pad; 12. Side groove; 13. Side ring; 14. Insert strip; 15. Motor spindle; 16. Guide hole. DETAILED DESCRIPTION

[0027] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] According to an embodiment of the utility model, a synchronous reluctance motor is provided.

[0029] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-4As shown, a synchronous reluctance motor according to an embodiment of the utility model comprises a synchronous reluctance motor body 1 and a motor spindle 15, wherein the motor spindle 15 is installed at the output end of the synchronous reluctance motor body 1, which is a common structure in the art, and an electromagnet bin 2 is fixedly installed on the outer surface of the front end cover of the synchronous reluctance motor body 1 on the outer side of the motor spindle 15, and an electromagnet body 3 is arranged in an annular manner inside the electromagnet bin 2, so as to improve the uniformity and strength of the magnetic force distribution, a guide rod 7 is fixedly arranged in an annular manner on the outer surface of the front end cover of the synchronous reluctance motor body 1 on the outer side of the electromagnet bin 2, and a movable disk 4 is slidably sleeved on the surface of the guide rod 7, the movable disk 4 is made of iron, and an inner groove 9 is provided on one side surface of the movable disk 4, and a side groove 1 is provided on the inner wall of the inner groove 9. 2, and a brake disc 10 is rotatably connected inside the inner groove 9, and a side ring 13 is integrally connected to the outer edge surface of the brake disc 10, the side ring 13 is inserted into the side groove 12 and rotatably connected to the side groove 12 to prevent the brake disc 10 from separating from the movable disc 4, one side surface of the brake disc 10 is located inside the inner groove 9 and is fixedly connected to a ceramic friction pad 11, and the other side surface of the ceramic friction pad 11 abuts against the inner groove 9, wherein the inner wall of the inner groove 9 is roughened, the friction coefficient is large, and the friction resistance is improved, the other side surface of the brake disc 10 is integrally opened with an insertion strip 14, the outer surface of the motor spindle 15 is fixedly connected with a brake disc 5, and the brake disc 5 is located between the electromagnet compartment 2 and the brake disc 10, and one side surface of the brake disc 5 is opened with an insertion strip corresponding to the insertion strip 14 Slot 6, when braking the motor spindle 15, the electromagnet body 3 is energized to attract the moving disk 4 to move toward the direction of the synchronous reluctance motor body 1, thereby driving the brake disc 10 to approach and fit with the brake disc 5, and the motor spindle 15 rotates to drive the slot 6 to coincide with the insertion strip 14, and the insertion strip 14 is inserted into the slot 6. Due to the effect of inertia, the brake disc 10 will rotate with the brake disc 5. At this time, the ceramic friction pad 11 located on the other side surface of the brake disc 10 and the inner wall of the inner groove 9 generate sliding friction, and the brake is quickly braked by a large friction force, thereby braking the motor spindle 15. During the braking process, the motor spindle 15 is quickly decelerated by friction resistance until it stops rotating, reducing the effect of inertia and avoiding the motor The main shaft 15 is damaged, and the ceramic friction pad 11 is not easy to heat up, and can provide long-term friction resistance, avoiding the problem of large kinetic energy generated by the excessive rotation speed of the motor main shaft 15. It has high stability in use, avoids the problem of limited buffering effect of traditional buffer mechanisms, improves braking performance and working stability, and effectively reduces the damage to the synchronous reluctance motor body 1 and the motor main shaft 15. At the same time, the electromagnet body 3 is arranged in a ring in the electromagnet bin 2. After power is turned on, it quickly generates magnetic force to attract the moving disk 4 to move, and the action is fast, which improves the braking efficiency and speed. At the same time, the electromagnet body 3 does not contact the brake disk 5 and the moving disk 4, and is not subjected to force during work, thereby avoiding deformation or damage due to force. It has high stability in use and a longer service life.

[0030] In one embodiment, a guide hole 16 is formed on the surface of the movable plate 4 outside the inner groove 9, and a guide rod 7 passes through the guide hole 16 and is slidably connected to the guide hole 16. The guide rod 7 serves as a moving guide for the movable plate 4 to facilitate stable movement of the movable plate 4.

[0031] In one embodiment, a spring 8 is sleeved on the outside of the guide rod 7, and the two ends of the spring 8 are fixedly connected to the moving disk 4 and the front end cover of the synchronous reluctance motor body 1 respectively. After the electromagnet body 3 is powered off, the spring 8 rebounds and pushes the moving disk 4 to reset, and the motor spindle 15 can work normally.

[0032] In one embodiment, the motor spindle 15, the moving disc 4, the brake disc 5, and the brake disc 10 are all coaxially arranged to improve working stability.

[0033] In one embodiment, multiple slots 6 and insertion strips 14 are distributed at equal angles along the central axis of the motor main shaft 15 to improve braking speed and efficiency, and the size of the slot 6 is larger than the size of the insertion strip 14, which facilitates the insertion of the insertion strip 14 into the slot 6.

[0034] In one embodiment, a plurality of guide rods 7 are distributed at equal angles along the central axis of the motor main shaft 15 , and the guide rods 7 are smooth round rods to improve the guiding stability.

[0035] Working principle:

[0036] When braking the motor spindle 15, the electromagnet body 3 is energized to attract the moving disk 4 to move toward the synchronous reluctance motor body 1, thereby driving the brake disc 10 to approach and fit with the brake disc 5. The motor spindle 15 rotates to drive the slot 6 to coincide with the insertion strip 14, and the insertion strip 14 is inserted into the slot 6. Due to inertia, the brake disc 10 will rotate with the brake disc 5. At this time, the ceramic friction pad 11 located on the other side of the brake disc 10 generates sliding friction with the inner wall of the inner groove 9, and brakes quickly through a large friction force, thereby braking the motor spindle 15. During the braking process, the motor spindle 15 quickly slows down through friction resistance until it stops rotating, reducing the effect of inertia and avoiding the motor spindle. 15 is damaged, the ceramic friction pad 11 is not easy to heat up, and can provide long-term friction resistance, avoiding the problem of large kinetic energy generated by the excessive rotation speed of the motor spindle 15. It has high stability in use, avoids the problem of limited buffering effect of traditional buffer mechanisms, improves braking performance and working stability, and effectively reduces the damage to the synchronous reluctance motor body 1 and the motor spindle 15. At the same time, the electromagnet body 3 is arranged in an annular shape in the electromagnet bin 2. After power is turned on, it quickly generates magnetic force to attract the moving disk 4 to move, and the action is fast, which improves the braking efficiency and speed. At the same time, the electromagnet body 3 does not contact the brake disk 5 and the moving disk 4, and is not subjected to force during work, thereby avoiding deformation or damage due to force. It has high stability in use and a longer service life.

[0037] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A synchronous reluctance motor, characterized in that: The invention comprises a synchronous reluctance motor body (1) and a motor main shaft (15), wherein the output end of the synchronous reluctance motor body (1) is provided with the motor main shaft (15), and an electromagnet bin (2) is fixedly installed on the outer surface of the front end cover of the synchronous reluctance motor body (1) outside the motor main shaft (15), and an electromagnet body (3) is arranged in an annular manner inside the electromagnet bin (2), and a guide rod (7) is fixedly arranged in an annular manner on the outer surface of the front end cover of the synchronous reluctance motor body (1) outside the electromagnet bin (2), and a movable disk (4) is slidably sleeved on the surface of the guide rod (7), and an inner groove (9) is provided on one side surface of the movable disk (4), and an inner wall of the inner groove (9) is provided with a side groove (12), and the inner groove (9) is rotatably connected to the inner surface of the movable disk (4). A brake disc (10) is provided, and an edge ring (13) is integrally connected to the outer edge surface of the brake disc (10), the edge ring (13) is inserted into the edge groove (12) and is rotatably connected to the edge groove (12), one side surface of the brake disc (10) is located inside the inner groove (9) and is fixedly connected to a ceramic friction pad (11), and the other side surface of the ceramic friction pad (11) is in contact with the inner groove (9), the other side surface of the brake disc (10) is integrally provided with an insertion strip (14), the outer surface of the motor main shaft (15) is fixedly connected to the brake disc (5), and the brake disc (5) is located between the electromagnet compartment (2) and the brake disc (10), and a slot (6) is provided on one side surface of the brake disc (5) corresponding to the insertion strip (14).

2. A synchronous reluctance motor according to claim 1, characterized in that: A guide hole (16) is formed on the surface of the movable plate (4) and is located outside the inner groove (9). The guide rod (7) passes through the guide hole (16) and is slidably connected to the guide hole (16).

3. A synchronous reluctance motor according to claim 1, characterized in that: A spring (8) is sleeved on the outside of the guide rod (7), and two ends of the spring (8) are respectively fixedly connected to the moving disk (4) and the front end cover of the synchronous reluctance motor body (1).

4. A synchronous reluctance motor according to claim 1, characterized in that: The motor main shaft (15), the moving disc (4), the brake disc (5) and the brake disc (10) are all coaxially arranged.

5. The synchronous reluctance motor according to claim 1, characterized in that: A plurality of the slots (6) and the inserting strips (14) are distributed at equal angles along the central axis of the motor main shaft (15), and the size of the slots (6) is larger than the size of the inserting strips (14).

6. A synchronous reluctance motor according to claim 1, characterized in that: A plurality of guide rods (7) are distributed at equal angles along the central axis of the motor main shaft (15), and the guide rods (7) are smooth round rods.

7. The synchronous reluctance motor according to claim 1, characterized in that: The inner wall of the inner groove (9) is roughened.

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