Motor protection structure
By designing the clutch state switching mechanism between the rotor and the motor shaft in the motor, the coordination of the second flange, pressurization assembly and adjustment nuts, the damage problem caused by the sudden increase in the load of the motor is solved, and the effective use of the motor is achieved Protect and extend service life.
Patent Information
- Application Number
- CN202420087731.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-15
AI Technical Summary
When the load of existing motors suddenly increases after a long period of use, the clutch motor may easily cause blockage, fever, etc., causing damage and may cause safety accidents.
A motor protection structure is designed, including a motor shaft, a rotor, a first flange, a second flange, an adjustment nut, a pressurized assembly and an elastic member. Through the cooperation of the second flange, a pressurized assembly and an adjustment nut, the Switch the clutch state between the rotor and the motor shaft to avoid overload and damage.
It effectively avoids damage caused by overload after long-term use of the motor, extends the service life of the motor, and improves safety.
Smart Images
Figure CN222262365U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a motor, and more specifically, to a motor protection structure. Background Art
[0002] A motor is a device that converts electrical energy into mechanical energy. It uses an energized coil to generate a rotating magnetic field and acts on the rotor to form a magnetic-electrical rotation torque. The rotor is fixed to the motor shaft, causing the motor shaft to rotate.
[0003] If the load of existing motors is suddenly increased after long-term use, it is easy to cause the clutch motor to stall or overheat, thereby causing damage to the motor and even more seriously causing a chain safety accident.
[0004] Therefore, a new solution is needed to solve this problem Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a motor protection structure.
[0006] The technical solution of the utility model is:
[0007] A motor protection structure comprises a motor shaft and a rotor sleeved on the outer peripheral wall of the motor shaft, the outer peripheral wall of the motor shaft is keyed with a first flange and a second flange at both ends of the rotor, the second flange is slidably connected to the motor shaft along the axial direction of the motor shaft, an adjusting nut is threadedly connected to one end of the motor shaft close to the second flange, a pressurizing assembly is slidably connected to the adjusting nut and the second flange along the axial direction of the motor shaft, an elastic member is provided between the pressurizing assembly and the second flange, the elastic member is sleeved on the motor shaft, one end of the elastic member is in contact with the adjusting nut, the other end of the elastic member is in contact with the input end of the pressurizing assembly, the output end of the pressurizing assembly is in contact with the second flange and applies pressure along the axial direction of the motor shaft to the end face of the second flange.
[0008] The utility model is further configured as follows: the pressurizing component includes an extrusion member, a transmission member and a plurality of sliding members, wherein the plurality of sliding members are input ends and are sleeved on the outer peripheral wall of the motor shaft, one end of the elastic member abuts against the sliding member, the extrusion member abuts against the end face of the second flange, the extrusion member and the transmission member are both movably connected to the motor shaft along the axial direction of the motor shaft, one end of the transmission member abuts against the extrusion member, and the other end of the transmission member abuts against the sliding member.
[0009] The utility model is further configured such that the transmission member includes a transmission rod and a follower which are plugged into each other, a notch for inserting the transmission rod is provided on one side of the follower, the follower passes through the motor shaft in the radial direction of the motor shaft, and a through groove for the follower to pass through is provided on the motor shaft.
[0010] The utility model is further configured that a mounting hole for the transmission rod to extend into is also opened on the motor shaft, the mounting hole passes through the through slot, and one end of the mounting hole extends and passes through along the axial direction of the motor shaft toward one end of the motor shaft close to the adjusting nut.
[0011] The utility model is further configured such that the number of the sliding members is set to two, and the two sliding members are spaced apart, the sliding members are all key-connected to the outer peripheral wall of the motor shaft, a retaining ring is provided between the two sliding members, and the retaining ring is sleeved on the outer peripheral wall of the motor shaft.
[0012] The utility model is further configured that a blocking portion is integrally formed on the outer peripheral wall of one end of the motor shaft close to the first flange, and the blocking portion is fitted with the end of the first flange.
[0013] The utility model is further configured such that friction plates are fixedly connected to one side of the first flange and the second flange that are close to each other.
[0014] The utility model is further configured that the end of the motor shaft is also threadedly connected with a limit nut, the limit nut is located on a side of the adjusting nut away from the elastic member, and the diameter of the adjusting nut is larger than the diameter of the limit nut.
[0015] The beneficial technical effects of the utility model are:
[0016] Through the cooperation between the second flange, the pressure assembly and the adjusting nut, the clutch state between the rotor and the motor shaft is switched, which avoids overloading of the motor shaft and burning of the motor after long-term use of the motor. This has a good protective effect on the motor and ensures the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model;
[0018] Figure 2 It is an exploded view of the utility model;
[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;
[0020] Figure 4 for Figure 2 The enlarged view of point B in the middle;
[0021] In the figure, 1, motor shaft; 11, blocking part; 12, mounting hole; 13, through groove; 2, first flange; 3, second flange; 4, rotor; 5, friction plate; 6, extrusion member; 7, transmission member; 71, transmission rod; 72, driven member; 721, notch; 8, sliding member; 81, retaining ring; 9, elastic member; 10, adjusting nut; 101, limit nut. DETAILED DESCRIPTION
[0022] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.
[0023] A motor protection structure, such as Figure 1-Figure 4 As shown, it includes a motor shaft 1 and a rotor 4 sleeved on the outer peripheral wall of the motor shaft 1, a first flange 2 and a second flange 3 are respectively provided on the outer peripheral wall of the motor shaft 1 at both ends of the rotor 4, the second flange 3 is connected to the motor shaft 1 along the axial direction of the motor shaft 1, an adjusting nut 10 is threadedly connected to the motor shaft 1 at one end of the motor shaft 1 close to the second flange 3, a pressurizing component is connected to the adjusting nut 10 and the second flange 3 along the axial direction of the motor shaft 1, an elastic member 9 is provided between the pressurizing component and the second flange 3, the elastic member 9 is sleeved on the motor shaft 1, the output end of the pressurizing component contacts the second flange 3 and applies pressure along the axial direction of the motor shaft 1 to the end face of the second flange 3.
[0024] A boss is integrally formed on the outer peripheral wall of one end of the motor shaft 1 to form a blocking portion 11, and the first flange 2 is sleeved on the motor shaft 1 from the other end and abuts against the end face of the blocking portion 11. The setting of the blocking portion 11 has a good limiting effect and can prevent the first flange 2 from continuing to move; and the first flange 2 is connected to the outer peripheral wall of the motor shaft 1 by a key connection, which limits the rotational freedom of the first flange 2; a friction plate 5 is fixedly connected to the side where the first flange 2 and the second flange 3 are close to each other, and the two ends of the rotor 4 abut against the friction plate 5. The setting of the friction plate 5 can prevent the first flange 2 and the second flange 3 from direct contact with the rotor 4, which may cause damage due to long-term use, thereby ensuring the service life of the overall structure.
[0025] The pressurizing assembly includes an extrusion member 6, a transmission member 7 and a plurality of sliding members 8. A sliding groove is provided on the motor shaft 1 at the position of the second flange 3. The extrusion member 6 adopts a flat key pin and is inserted into the sliding groove, so that the extrusion member 6 is movably connected to the motor shaft 1 along the axial direction of the motor shaft 1, and the extrusion member 6 abuts against the end surface of the second flange 3; the transmission member 7 includes a transmission rod 71 and a driven member 72 that are plugged into each other. A mounting hole 12 for mounting the transmission rod 71 is provided in the center of the motor shaft 1. One end of the mounting hole 12 is connected to the sliding groove, and the other end of the mounting hole 12 extends along the axial direction of the motor shaft 1 and penetrates The motor shaft 1 is passed through, and the transmission rod 71 is inserted into the mounting hole 12 from one end of the mounting hole 12 and conflicts with the extrusion member 6. A through groove 13 is provided on the motor shaft 1 for the follower 72 to pass through. The mounting hole 12 passes through the through groove 13. The follower 72 extends into the through groove 13 along the radial direction of the motor shaft 1 and passes through the motor shaft 1. A notch 721 is provided on the side of the follower 72 facing the transmission rod 71. The end of the transmission rod 71 away from the extrusion member 6 is inserted into the notch 721 and conflicts with the inner bottom wall of the notch 721; the transmission rod 71 is inserted into the notch 721, thereby limiting the radial movement of the follower 72 along the motor shaft 1.
[0026] The number of the sliding members 8 is set according to the actual situation, and can be set to one or more. When it is set to more than one, a retaining ring 81 is set between adjacent sliding members 8. In this embodiment, Figure 1As shown, the number of sliding members 8 is set to two, the two sliding members 8 are arranged at intervals and are keyed to the outer peripheral wall of the motor shaft 1, the sliding member 8 arranged away from the second flange 3 is the input end of the entire pressurizing assembly, the sliding member 8 arranged close to the second flange 3 abuts against one side of the driven member 72, a retaining ring 81 is arranged between the two sliding members 8, and the retaining ring 81 is also sleeved on the outer peripheral wall of the motor shaft 1, and the setting of the retaining ring 81 prevents the two sliding members 8 from directly contacting, colliding, and causing damage; the elastic member 9 adopts a spring and is sleeved on the end of the motor shaft 1, one end of the elastic member 9 abuts against the sliding member 8, that is, contacts with the input end of the pressurizing assembly, and the other end of the elastic member 9 abuts against the adjusting nut 10, and the setting of the elastic member 9 prevents the adjusting nut 10 from directly contacting the sliding member 8, and the elastic member 9 has a good buffering effect and can It is good to prevent collision damage, and the elasticity of the elastic member 9 can be used to better utilize its elastic force to ensure the extrusion force between the second flange 3 and the rotor 4, thereby ensuring the driving effect; a limiting nut 101 is also threadedly connected to the end of the motor shaft 1, and the limiting nut 101 is located on the side of the adjusting nut 10 away from the elastic member 9. The setting of the limiting nut 101 can limit the movement trajectory of the adjusting nut 10 toward the outside of the motor shaft 1, and can effectively prevent the adjusting nut 10 from rotating too much and separating from the motor shaft 1, and also prevent the adjusting nut 10 from loosening; the diameter of the adjusting nut 10 is larger than the diameter of the limiting nut 101, the adjusting nut 10 is larger, the contact area is increased, and it can be easier to rotate manually, the limiting nut 101 is smaller, and is blocked by the adjusting nut 10, and requires a tool to rotate, which further ensures the limiting effect.
[0027] Working principle: tighten the adjusting nut 10, the adjusting nut 10 moves toward the elastic member 9, and an external force is applied to the elastic member 9. After the elastic member 9 is compressed, it pushes the sliding member 8 to move. The movement of the sliding member 8 drives the follower 72 to move, thereby driving the transmission rod 71 to move. One end of the follower rod contacts the extrusion member 6, thereby driving the extrusion member 6 to extrude the second flange 3, so that the friction plate 5 bonded to the second flange 3 is close to the rotor 4, thereby generating friction, so that the rotor 4 and the motor shaft 1 are relatively fixed and can rotate together; conversely, loosen the adjusting nut 10, there is no external force between the second flange 3 and the rotor 4, and thus no friction. At this time, the rotor 4 rotates, and the motor shaft 1 does not rotate; thereby realizing the switching of the clutch state between the rotor 4 and the motor shaft 1, avoiding overloading of the motor shaft 1 after long-term use of the motor, burning the motor, and causing damage to the motor, which has a good protective effect on the motor and ensures the service life of the motor.
[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.
Claims
1. A motor protection structure, characterized in that: The invention comprises a motor shaft (1) and a rotor (4) sleeved on the outer peripheral wall of the motor shaft (1); a first flange (2) and a second flange (3) are key-connected at two ends of the rotor (4) on the outer peripheral wall of the motor shaft (1); the second flange (3) is connected to the motor shaft (1) slidably along the axial direction of the motor shaft (1); an adjusting nut (10) is threadedly connected to one end of the motor shaft (1) close to the second flange (3); a pressurizing component is connected to the adjusting nut (10) and the second flange (3) slidably along the axial direction of the motor shaft (1); an elastic member (9) is provided between the pressurizing component and the second flange (3); the elastic member (9) is sleeved on the motor shaft (1); one end of the elastic member (9) contacts the adjusting nut (10); the other end of the elastic member (9) contacts the input end of the pressurizing component; the output end of the pressurizing component contacts the second flange (3) and applies pressure along the axial direction of the motor shaft (1) to the end surface of the second flange (3).
2. The motor protection structure according to claim 1, characterized in that: The pressurizing component comprises an extrusion member (6), a transmission member (7) and a plurality of sliding members (8); the plurality of sliding members (8) are input ends and are sleeved on the outer peripheral wall of the motor shaft (1); one end of the elastic member (9) abuts against the sliding member (8); the extrusion member (6) abuts against the end surface of the second flange (3); the extrusion member (6) and the transmission member (7) are both movably connected to the motor shaft (1) along the axial direction of the motor shaft (1); one end of the transmission member (7) abuts against the extrusion member (6) and the other end of the transmission member (7) abuts against the sliding member (8).
3. The motor protection structure according to claim 2, characterized in that: The transmission member (7) comprises a transmission rod (71) and a driven member (72) which are plugged into each other; a notch (721) is provided on one side of the driven member (72) for the transmission rod (71) to be inserted into; the driven member (72) passes through the motor shaft (1) in the radial direction of the motor shaft (1); and a through slot (13) is provided on the motor shaft (1) for the driven member (72) to pass through.
4. The motor protection structure according to claim 1, characterized in that: The motor shaft (1) is also provided with a mounting hole (12) for the transmission rod (71) to extend therethrough, the mounting hole (12) passing through the through slot (13), and one end of the mounting hole (12) extending axially along the motor shaft (1) toward and passing through one end of the motor shaft (1) close to the adjusting nut (10).
5. The motor protection structure according to claim 2, characterized in that: The number of the sliding members (8) is set to two, and the two sliding members (8) are arranged at an interval, and the sliding members (8) are all key-connected to the outer peripheral wall of the motor shaft (1), and a retaining ring (81) is arranged between the two sliding members (8), and the retaining ring (81) is sleeved on the outer peripheral wall of the motor shaft (1).
6. The motor protection structure according to claim 1, characterized in that: A blocking portion (11) is integrally formed on the outer peripheral wall of one end of the motor shaft (1) close to the first flange (2), and the blocking portion (11) is fitted with the end of the first flange (2).
7. The motor protection structure according to claim 1, characterized in that: A friction plate (5) is fixedly connected to the first flange (2) and the second flange (3) on one side close to each other.
8. The motor protection structure according to claim 1, characterized in that: The end of the motor shaft (1) is also threadedly connected to a limit nut (101), the limit nut (101) is located on a side of the adjustment nut (10) away from the elastic member (9), and the diameter of the adjustment nut (10) is greater than the diameter of the limit nut (101).