Vertical motor

Abstract

The invention discloses a vertical motor, and relates to the technical field of motors, the vertical motor comprises a rotating shaft, the rotating shaft is sleeved with a first bearing and a rotor which are fixedly connected with the rotating shaft, and a limiting assembly comprises a first limiting plate, a locking unit, a first bearing and a second limiting plate which are sequentially arranged on the rotating shaft in a sleeving mode; the first bearing is located between the locking unit and the second limiting plate. The structure limits the axial movement of the first bearing, the rotating shaft and the rotor; the locking unit is in locking fit with the rotating shaft in the circumferential direction, and one end, facing the first bearing, of the locking unit abuts against the inner ring of the first bearing, so that the locking unit is not prone to loosening and falling off relative to the rotating shaft under the external action of rotor gravity and the like, and the situation that the axial magnetic field component is increased due to uneven distribution of air gaps between the stator and the rotor is reduced; the problems that extra eddy-current loss is generated by the stator and rotor cores, the operation efficiency of the vertical motor is reduced, and excessive heat is generated are solved.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a vertical motor. Background Technology

[0002] A vertical motor is a motor in which the centerline of the output shaft is perpendicular to the chassis or transmission mechanism. Its key feature is that the mounting holes are equidistantly distributed around the output shaft. The air gap is the distance between the rotor and stator in a motor. In existing technologies, the air gap distribution between the rotor and stator of motors is relatively uneven. This uneven distribution can lead to several problems: an excessively large air gap weakens the magnetic circuit, reducing motor efficiency; an excessively small air gap exacerbates core losses.

[0003] Therefore, how to reduce the uneven distribution of air gap between the rotor and stator, and subsequently reduce the problems of low power operation and core loss of vertical motor caused by uneven air gap distribution, has become a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a vertical motor that reduces the uneven distribution of the air gap between the rotor and stator, thereby reducing problems such as low-power operation and core loss caused by uneven air gap distribution.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a vertical motor, the vertical motor comprising:

[0007] A rotating shaft, on which a first bearing and a rotor are fixedly connected;

[0008] A limiting assembly includes a first limiting plate, a locking unit, a first bearing, and a second limiting plate sequentially sleeved on the rotating shaft. Both the first and second limiting plates are rotatably connected to the rotating shaft. The first limiting plate is located on the axial movement trajectory of the locking unit. The locking unit and the rotating shaft are locked together circumferentially on the rotating shaft. The end of the locking unit near the first bearing abuts against the inner ring of the first bearing axially on the rotating shaft, and the outer ring of the first bearing abuts against the second limiting plate axially on the rotating shaft.

[0009] Preferably, the locking unit includes a first locking member and a first nut. The first locking member is located at the end of the first nut near the first bearing. The end of the first locking member near the first bearing abuts against the inner ring of the first bearing in the axial direction of the rotating shaft. The first limiting plate is located on the axial movement trajectory of the first nut. The first nut is threadedly connected to the rotating shaft. The outer side of the first nut is uniformly provided with A first locking grooves along the circumferential direction. The outer side of the first locking member is provided with B first locking teeth along the circumferential direction that lock and engage with the first locking grooves, and 4 < A ≤ 6, 6 < B ≤ 11.

[0010] Alternatively, the locking unit includes a second nut and a second locking member. The second nut is threadedly connected to the rotating shaft and is located at the end of the second locking member near the first bearing. The end of the second nut near the first bearing abuts against the inner ring of the first bearing in the axial direction of the rotating shaft. The second locking member includes a plurality of third nuts arranged circumferentially along the second nut. The third nuts are located at the end of the second nut away from the first bearing. The first limiting plate is located on the axial movement trajectory of the third nuts. The second nut and the third nuts are fastened together by locking bolts. A stop washer is provided between the second and the third nuts.

[0011] Preferably, the first locking tooth is inclined and faces the first nut;

[0012] And / or, the first locking tooth located between adjacent first locking slots engages with the end of the first nut facing the first locking member;

[0013] And / or, A=6, B=11.

[0014] Preferably, an oil supply plate is fitted on the rotating shaft, and the first bearing is connected to an external oil supply mechanism through the oil supply plate.

[0015] Preferably, the center height of the vertical motor is H, where H > 630 mm, and the stator diameter of the vertical motor is D, where D > 1080 mm.

[0016] Preferably, the vertical motor includes a base, a first end cover sleeved on the outside of the rotating shaft at the first end of the base, the rotating shaft being rotatably connected to the first end cover, and a first bearing and the limiting component being provided between the first end cover and the rotating shaft, with one end of the rotating shaft extending out of the base.

[0017] Preferably, the first end cover is an upper end cover, and one end of the rotating shaft extends out of the lower end of the base.

[0018] Preferably, the cross-section of the base is annular; and / or, the outer side of the base is provided with a plurality of reinforcing members.

[0019] Preferably, the base is connected to a plurality of coolers; and / or, the vertical motor further includes a base located at the bottom of the base and detachably connected to the base.

[0020] Preferably, the vertical motor further includes a bushing sleeved outside the first bearing, a first insulating layer is provided between the bushing and the first bearing, and a second insulating layer is provided outside the bushing.

[0021] The present invention achieves the following technical effects compared to the prior art:

[0022] The vertical motor of the present invention includes: a rotating shaft, a first bearing and a rotor fixedly connected to the rotating shaft are sleeved on the rotating shaft, and a limiting assembly includes a first limiting plate, a locking unit, a first bearing and a second limiting plate sequentially sleeved on the rotating shaft, the first limiting plate and the second limiting plate being rotatably connected to the rotating shaft.

[0023] Because the first limiting plate is located at the end of the locking unit furthest from the first bearing, and is situated on the axial movement trajectory of the locking unit, when the shaft moves towards the first limiting plate under external force, the first limiting plate will abut against the locking unit, preventing the shaft and rotor from moving towards the first limiting plate. Furthermore, the second limiting plate abuts against the outer ring of the first bearing axially on the shaft. Therefore, when the shaft tends to move towards the second limiting plate under external force, the second limiting plate will abut against the outer ring of the first bearing, preventing the shaft and rotor from moving towards the second limiting plate. In short, the present invention restricts the axial movement of the first bearing, the shaft, and the rotor by cooperating with the first limiting plate, the locking unit, the first bearing, and the second limiting plate. This reduces the problem of the rotor moving axially, causing the center of gravity of the three-dimensional motor structure to change, resulting in some areas of the rotor rotating closer to the stator. This leads to uneven air gap distribution between the stator and the rotor, increases the axial magnetic field component, causes additional eddy current losses in the stator and rotor cores, exacerbates core losses in the stator and rotor, reduces the operating efficiency of the vertical motor, and generates excessive heat.

[0024] Furthermore, the locking unit and the rotating shaft are locked together in the circumferential direction. The end of the locking unit near the first bearing abuts against the inner ring of the first bearing. This further strengthens the locking and limiting of the locking unit and the rotating shaft in the circumferential direction, making it less likely for the locking unit to loosen or fall off relative to the rotating shaft under the influence of external forces such as rotor gravity. It can more stably press the inner ring of the first bearing, and then, together with the second limiting plate and other structures, restrict the axial movement of the rotating shaft and the rotor. This reduces the problem of uneven air gap distribution between the stator and the rotor, which increases the axial magnetic field component, causes additional eddy current losses in the stator and rotor cores, exacerbates the core losses of the stator and the rotor, reduces the operating efficiency of the vertical motor, and generates excessive heat.

[0025] In summary, this invention not only maintains the stability of the air gap (radial gap) between the rotor and stator, but also shortens the adjustment time required when the air gap distribution between the rotor and stator is uneven. It significantly reduces the problems caused by uneven air gap distribution, such as increased axial magnetic field component in vertical motors, additional eddy current losses in the stator and rotor cores, increased core losses in the stator and rotor, reduced operating efficiency of vertical motors, and excessive heat generation. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a vertical motor;

[0028] Figure 2 This is a schematic diagram of the structure of the first bearing and the locking plate when the first locking element is a locking plate;

[0029] Figure 3 This is a top view of the locking plate;

[0030] Figure 4 A schematic diagram of the structure when the locking unit includes the first nut;

[0031] Figure 5 This is a schematic diagram of the structure when the first nut and the locking plate are engaged.

[0032] Figure 6 This is a schematic diagram of the machine base;

[0033] Figure 7 This is a side view of the locking plate;

[0034] Figure 8 This is a schematic diagram of the structure when the locking unit includes a second nut and the second locking member includes a second nut and a third nut.

[0035] Figure 9 A schematic diagram of the locking fit between the second nut, the third nut, the locking washer, and the locking bolt;

[0036] Figure 10 This is a top view of the second nut;

[0037] Figure 11 This is a schematic diagram of the third nut.

[0038] Figure 12 This is a schematic diagram of the locking bolt structure;

[0039] Figure 13 This is a schematic diagram of the structure of the first insulating layer;

[0040] Figure 14 This is a cross-sectional view of the bushing and the second insulating layer;

[0041] The components are as follows: 1. Vertical motor; 2. First bearing; 3. Stator; 4. Cooler; 5. Second bearing; 6. Frame; 7. Rotor; 8. First limiting plate; 9. First nut; 10. Locking plate; 11. Oil pan; 12. First mounting plate; 13. Second mounting plate; 14. First locking tooth; 15. Second locking tooth; 16. First locking groove; 17. Rounding; 18. Reinforcing member; 19. Second limiting plate; 20. Second nut; 21. Third nut; 22. Stop washer; 23. Locking bolt; 24. Bushing; 25. First insulation layer; 26. Second insulation layer. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] like Figures 1 to 14 As shown, the present invention discloses a vertical motor 1. The vertical motor 1 of the present invention includes: a rotating shaft, a first bearing 2 and a rotor 7 fixedly connected to the rotating shaft and sleeved on the rotating shaft, and a limiting assembly including a first limiting plate 8, a locking unit, a first bearing and a second limiting plate 19 sequentially sleeved on the rotating shaft, the first limiting plate 8 and the second limiting plate 19 being rotatably connected to the rotating shaft.

[0045] Since the first limiting plate 8 is located at the end of the locking unit away from the first bearing 2 and on the axial movement trajectory of the locking unit, when the shaft moves towards the first limiting plate 8 under external force, the first limiting plate 8 will abut against the locking unit, preventing the shaft and rotor 7 from moving towards the first limiting plate 8. Furthermore, the second limiting plate 19 abuts against the outer ring of the first bearing 2 axially on the shaft. Therefore, when the shaft tends to move towards the second limiting plate 19 under external force, the second limiting plate 19 will abut against the outer ring of the first bearing 2, preventing the shaft and rotor 7 from moving towards the second limiting plate 19. In short, the present invention restricts the axial movement of the first bearing 2, the shaft and the rotor 7 by cooperating with the first limiting plate 8, the locking unit and the first bearing 2 and the second limiting plate 19. This reduces the problem of the rotor 7 moving axially, causing the center of gravity of the three-dimensional motor structure to change, causing some areas of the rotor 7 to rotate towards the stator 3, resulting in uneven air gap distribution between the stator 3 and the rotor 7, increasing the axial magnetic field component, causing additional eddy current losses in the core of the stator 3 and the rotor 7, aggravating the core losses of the stator 3 and the rotor 7, reducing the operating efficiency of the vertical motor 1 and generating excessive heat.

[0046] Furthermore, the locking unit and the rotating shaft are locked together in the circumferential direction. The end of the locking unit facing the first bearing 2 abuts against the inner ring of the first bearing 2. This further strengthens the locking and limiting of the locking unit and the rotating shaft in the circumferential direction, making it less likely for the locking unit to loosen or fall off relative to the rotating shaft under the influence of external forces such as the gravity of the rotor 7. It can more stably press the inner ring of the first bearing 2, and then, together with the second limiting plate 19 and other structures, restrict the axial movement of the rotating shaft and the rotor 7. This reduces the problem of uneven air gap distribution between the stator 3 and the rotor 7, which increases the axial magnetic field component and causes additional eddy current losses in the iron core of the stator 3 and the rotor 7, aggravates the iron core losses of the stator 3 and the rotor 7, reduces the operating efficiency of the vertical motor 1, and generates excessive heat.

[0047] In summary, this invention not only maintains the stability of the air gap (radial gap) between the rotor 7 and the stator 3, but also shortens the adjustment time required when the air gap distribution between the rotor 7 and the stator 3 is uneven. It significantly reduces the problems caused by uneven air gap distribution, such as increased axial magnetic field component in the vertical motor 1, additional eddy current losses in the stator 3 and rotor 7 cores, increased core losses in the stator 3 and rotor 7, reduced operating efficiency of the vertical motor 1, and excessive heat generation.

[0048] The locking unit has various configuration options, such as... Figures 2-7As shown, the locking unit includes a first locking member and a first nut 9. The first locking member is located at the end of the first nut 9 near the first bearing 2. The end of the first locking member near the first bearing 2 abuts against the inner ring of the first bearing 2 in the axial direction of the rotating shaft. The first nut 9 is threaded to the rotating shaft. The outer side of the first nut 9 is uniformly provided with A first locking grooves along the circumferential direction. The outer side of the first locking member is provided with B first locking teeth 14 that lock and engage with the first locking grooves 16, and 4 < A ≤ 6, 6 < B ≤ 11. Because the first limiting plate 8 is located at the end of the first nut 9 away from the first bearing 2, and the first limiting plate 8 is located on the axial movement trajectory of the first nut 9, when the rotating shaft moves towards the first limiting plate 8 under external force, the first limiting plate 8 will abut against the first nut 9, preventing the rotating shaft and rotor 7 from moving towards the first limiting plate 8. Furthermore, the second limiting plate 19 abuts against the first bearing 2. The outer ring abuts against the shaft in the axial direction. Therefore, when the shaft tends to move towards the second limiting plate 19 under external force, the second limiting plate 19 will abut against the outer ring of the first bearing 2, preventing the shaft and rotor 7 from moving towards the second limiting plate 19. In short, the present invention restricts the axial movement of the first bearing 2, shaft and rotor 7 through the cooperation of the first limiting plate 8, the first locking member and the first nut 9, and the second limiting plate 19. This reduces the problem of the rotor 7 moving along the axial direction, causing the center of gravity of the three-dimensional motor structure to change, causing some areas of the rotor 7 to rotate towards the stator 3, resulting in uneven air gap distribution between the stator 3 and rotor 7, increasing the axial magnetic field component, causing additional eddy current losses in the core of the stator 3 and rotor 7, aggravating the core losses of the stator 3 and rotor 7, reducing the operating efficiency of the vertical motor 1, and generating excessive heat.

[0049] Furthermore, the first nut 9 is threadedly connected to the shaft. Compared to a sliding connection between the first nut 9 and the shaft, this makes the first nut 9 less prone to loosening or falling off under external forces such as the gravity of the rotor 7. It can maintain a more continuous contact with the inner ring of the first bearing 2, thereby limiting the axial movement of the shaft and rotor 7 by the aforementioned structures, including the second limiting plate 19. Moreover, the first nut 9 is also fixedly connected to the first locking member. The first locking member is locked in place with the shaft in the circumferential direction, and the end of the first locking member facing the first bearing 2 abuts against the inner ring of the first bearing 2. Compared to the first nut 9 alone, the combination of the first nut 9 and the first locking member has stronger rigidity. Simultaneously, because the first nut 9 and the first locking member... A locking component is fixedly connected, and the first locking component locks with the rotating shaft in the circumferential direction of the rotating shaft. This further strengthens the locking and limiting of the first nut 9 and the rotating shaft in the circumferential direction, making it less likely for the first nut 9 to loosen or fall off relative to the rotating shaft under the external action of the rotor 7's gravity, and can more stably press the inner ring of the first bearing 2. Then, in conjunction with the second limiting plate 19 and other structures, it restricts the axial movement of the rotating shaft and the rotor 7, reducing the problem of uneven air gap distribution between the stator 3 and the rotor 7, increasing the axial magnetic field component, causing additional eddy current losses in the iron core of the stator 3 and the rotor 7, aggravating the iron core losses of the stator 3 and the rotor 7, reducing the operating efficiency of the vertical motor 1, and generating excessive heat.

[0050] The rotating shaft and the first bearing 2 are either interference-fitted or keyed: a keyway is formed axially on the rotating shaft, and a key is provided on the side of the first bearing 2 to achieve a keyed connection with the keyway; alternatively, other fixed connection methods may also be used between the rotating shaft and the first bearing 2. The rotor 7 and the rotating shaft are fixedly connected by interference fit, welding, bolting, or other methods. The first limiting plate 8 and the second limiting plate 19 are both rotatably connected to the rotating shaft to facilitate its rotation. The first limiting plate 8 is located on the axial movement trajectory of the first nut 9. This means that there is a certain distance between the first limiting plate 8 and the first nut 9. When the shaft and rotor 7 move a certain distance towards the first limiting plate 8 under external force, the first limiting plate 8 prevents the first nut 9 from moving, and the rotor 7 and shaft move towards the first limiting plate 8. It should be noted that the distance between the first limiting plate 8 and the first nut 9 should not be too long, so that after the rotor 7 moves axially by this distance, the center of gravity of the overall structure of the vertical motor 1 will not change significantly, and it will not cause uneven air gap distribution between the stator 3 and the rotor 7. Alternatively, the first limiting plate 8 and the first nut 9 abut against each other. When the shaft and rotor 7 tend to move towards the first limiting plate 8 under external force, the first limiting plate 8 inhibits the first nut 9 from moving towards the first limiting plate 8, thereby inhibiting the rotor 7 and shaft from moving towards the first limiting plate 8. The first nut 9 is fixedly connected to the first locking member, meaning that the first nut 9 and the first locking member are fixedly connected through the cooperation of the first locking tooth 14 and the first locking groove 16. Furthermore, the rotor 7 and the aforementioned limiting assembly are structurally designed to avoid overlap, ensuring that the respective functions of the limiting assembly and the rotor 7 can be smoothly realized; specifically, the rotor 7 can be positioned on the rotating shaft below the limiting assembly.

[0051] The circumferential locking fit between the first locking element and the rotating shaft means that the first locking element will not rotate relative to the rotating shaft, but will rotate synchronously with the rotating shaft. This makes it less likely that the first nut 9, which is fixedly connected to the first locking element, will rotate relative to the rotating shaft and loosen. The first locking element and the rotating shaft can be connected by bolts or snap-fit ​​to achieve the circumferential locking fit. Alternatively, as... Figure 3 , Figure 7 As shown, a number of second locking teeth 15 are arranged circumferentially on the inner ring of the first locking member (a number of second locking teeth 15 can be arranged evenly or unevenly on the inner ring of the locking member according to the working conditions), and a number of second locking grooves that can lock and cooperate with the second locking teeth 15 are arranged circumferentially on the rotating shaft.

[0052] Moreover, A first locking grooves 16 are evenly provided along the circumferential direction on the outer side of the first nut 9, and B first locking teeth 14 that are in locking cooperation with the first locking grooves 16 are provided along the circumferential direction on the outer side of the first locking member. 4 < A ≤ 6, 6 < B ≤ 11. When the air gap between the stator 3 and the rotor 7 fluctuates, that is, the distribution is uneven, slightly rotating the first locking member, for example, rotating the first locking member by about 30°, can make the first locking teeth 14 and the first locking grooves 16 be in locking cooperation and release the locking cooperation, so as to achieve axial limiting and releasing of the rotating shaft and the rotor 7. Thus, the rotor 7 and the rotating shaft can be axially moved in the direction close to the first limiting plate 8 or the second limiting plate 19. Compared with the prior art in which the first locking member needs to be rotated multiple turns to adjust the axial position of the rotor 7 and the rotating shaft, the present invention shortens the time consumed for adjusting the gap between the stator 3 and the rotor 7, and reduces the time for the vertical motor 1 to operate in a state with uneven air gap distribution. Furthermore, it reduces the problem that due to the uneven air gap distribution between the stator 3 and the rotor 7, an additional axial magnetic field component is increased, resulting in additional eddy current losses in the iron cores of the stator 3 and the rotor 7, aggravating the iron core losses of the stator 3 and the rotor 7, reducing the operating efficiency of the vertical motor 1, and generating excessive heat.

[0053] As Figure 4 shown, at this time, the first locking member includes a locking piece 10. The locking piece 10 is located at one end of the first nut 9 close to the first bearing. One end of the locking piece 10 close to the first bearing abuts against the inner ring of the first bearing in the axial direction of the rotating shaft. A locking grooves are evenly provided along the circumferential direction on the outer side of the first nut 9, and B first locking teeth that are in locking cooperation with the locking grooves are provided along the circumferential direction on the outer side of the locking piece 10. 4 < A ≤ 6, 6 < B ≤ 11. Specifically, 6 first locking grooves 16 can be evenly provided along the circumferential direction on the outer side of the first nut 9, and 11 first locking teeth 14 are provided on the outer side of the first locking member (the setting method of the first locking teeth 14 matches the setting method of the first locking grooves 16, so that when the first nut 9 needs to be fixedly connected to the first locking member, the first locking grooves 16 are all provided with first locking teeth 14). This reduces the rotation angle required for the first nut 9 to lock the first bearing 2, and makes the first nut 9 have higher strength and stiffness (if too many first locking grooves 16 are provided, the strength and stiffness of the first nut 9 will drop too much, and it may be difficult to meet the working conditions requirements, and problems such as vibration and damage are likely to occur after running for a period of time). At the same time, without affecting the working conditions requirements, the number of the first locking teeth 14 and the first locking grooves 16 is increased as much as possible. Then, when the first nut 9 presses and releases the pressing of the first bearing 2, compared with the prior art in which multiple turns need to be rotated to release the pressing of the first bearing 2, the rotation angle required for the first nut 9 to release and achieve the pressing of the first bearing 2 in the present invention is smaller, and only about 60° of rotation is required, making the adjustment of the air gap between the stator 3 and the rotor 7 more convenient.

[0054] The first locking groove 16 can be opened along the axial direction of the first nut 9 and pass through the first nut 9. The first locking tooth 14 can be opened along the axial direction or in a direction inclined to the axial direction of the first locking member. As long as the first nut 9 and the first locking member are fixed together, the first locking groove 16 is provided with the first locking tooth 14. Rotating the first nut 9 can realize the fixing and unlocking of the first nut 9 and the first locking member. Figure 7 As shown, when the first locking tooth 14 is tilted toward the end near the first nut 9, the end of the first nut 9 facing the first locking member is provided with a rounded end 17, and the angle of the rounded end 17 matches the angle of the first locking tooth 14, so that the first locking tooth 14, which is not in the first locking groove 16, can fit together with the first nut 9 in its natural state, that is, without bending.

[0055] Similarly, the number of the second locking groove and the second locking tooth 15 is also set according to the working conditions. The number of the second locking tooth 15 and the second locking groove is the same, and at least one second locking tooth 15 is provided. When assembling the first locking component, align the second locking tooth 15 with the direction of the second locking groove, fit the first locking component onto the rotating shaft, align the first locking groove 16 of the first nut 9 with the first locking tooth 14, and then fit the first nut 9 onto the rotating shaft. Subsequently, the first locking tooth 14 can be bent in the first locking groove 16 towards the direction of the first nut 9 to achieve locking, and the second locking tooth 15 can be bent in the second locking groove towards the direction of the first nut 9 to achieve locking. Alternatively, if the first locking tooth 14 can lock with the first locking groove 16 without bending, for example, if the first locking tooth 14 is stuck in the first locking groove 16, the first locking tooth 14 does not need to be bent. Similarly, if the second locking tooth 15 can lock with the second locking groove without bending, the second locking tooth 15 also does not need to be bent.

[0056] like Figures 8 to 14As shown, at this time, the locking unit includes a second nut 20 and a second locking member. The second nut 20 is threadedly connected to the rotating shaft and is located at the end of the second locking member near the first bearing 2. The end of the second nut 20 near the first bearing 2 abuts against the inner ring of the first bearing 2 in the axial direction of the rotating shaft. The second locking member includes a plurality of third nuts 21 arranged circumferentially along the second nut 20 (at this time, the second nut 20 is reduced from moving axially along the rotating shaft by the fastening connection of the third nuts 21 and the second nut 20, that is, the locking fit between the second nut 20 and the rotating shaft is realized). The second nut 20 and the third nuts 21 are fastened together by locking bolts 23. A stop washer 22 is provided between the second nut 20 and the third nuts 21. Specifically, the second nut 20 has 6 through holes. When assembling the vertical motor, after adjusting and installing the first bearing 2, the position of the blind hole for installing the third nut 21 is determined on the second nut 20. After assembling the second nut 20 and the third nut 21, a stop washer 22 is set at the end of the third nut 21 away from the second nut 20, and the second nut 20, the stop washer 22 and the third nut 21 are fastened together by the locking bolt 23.

[0057] like Figure 8 , Figure 13 , Figure 14 As shown, the vertical motor also includes a bushing 24 (also called a bearing sleeve) fitted over the first bearing. A first insulating layer 25 is provided between the bushing 24 and the first bearing, and a second insulating layer 26 is provided outside the bushing 24. By sequentially setting the first insulating layer 25 and the second insulating layer 26 inside and outside the bushing 24, the insulation of the vertical motor is improved, which is beneficial for the vertical motor to operate in marine climates such as islands. The first insulating layer 25 can specifically be a polyimide film polyamide fiber paper, that is, an insulating paper with insulating properties made of polyamide-imide composite material; the second insulating layer 26 can specifically be a cured non-woven tape, which can also be called a non-woven binding tape. The non-woven binding tape uses twisted alkali-free glass yarn or alkali-free non-twisted glass fiber yarn as reinforcing material, and is impregnated with a high-temperature resistant thermosetting resin (such as polyester resin) to form a semi-cured state, which has excellent electrical insulation properties. Alternatively, the first insulating layer 25 and the second insulating layer 26 can also be made of other materials with insulating properties.

[0058] Furthermore, in this invention, the vertical motor 1 is an AC motor, and the diameter of the stator 3 is D, where D > 1080 mm. Specifically, it can be 1200 mm, 1300 mm, 1500 mm, 1700 mm, etc. Compared with existing motors where the stator 3 diameter D < 1080 mm, this increases the stator 3 diameter, that is, increases the diameter of the laminations forming the stator 3 core. According to the formula... (where C is in the formula) ALet D be a constant for vertical motor 1, and D be the armature diameter; when vertical motor 1 is a DC motor, D is the outer diameter of rotor 7; when vertical motor 1 is an AC motor, D is the inner diameter of stator 3, and L is a constant. ef L is the armature length. When vertical motor 1 is an AC motor, L ef L is the core length of stator 3. When vertical motor 1 is a DC motor, L ef Given the length of the rotor core (where P is the motor power and n is the motor speed), it can be seen that in C... A With parameters such as P and n remaining constant, increasing D will increase the armature length L. ef That is, the length of the stator 3 core is shortened; thus, the present invention is equivalent to adjusting the "tall and thin" vertical motor 1 in the prior art to a "flat" vertical motor 1, which lowers the center of gravity of the overall structure of the vertical motor 1, reducing the probability that the rotor 7 of the vertical motor 1, which is located at a higher center of gravity, will easily rotate towards the stator 3 under the action of gravity, resulting in uneven air gap distribution. At the same time, since the increase in stator diameter means an increase in the volume of stator core and windings, the overall weight of the vertical motor 1 increases accordingly. In order to ensure that the base 6 can stably support the vertical motor and resist vibration, it is necessary to increase the center height (the center height refers to the vertical distance between the center line of the shaft (or axis) and the bottom support surface of the base 6 (also known as the bottom corner plane)) (i.e., the distance from the bottom support surface to the center line of the shaft) to expand the size of the base 6 and improve the rigidity of the base 6. Specifically, the center height of the vertical motor 1 of the present invention is H, where H > 630mm, and can be 710mm, 800mm, 900mm, or 1000mm; when H = 710mm, D = 1200mm; when H = 800mm, D = 1300mm; when H = 900mm, D = 1500mm; and when H = 1000mm, D = 1700mm.

[0059] like Figure 1 As shown, the vertical motor 1 includes a base 6. A first end cover, fitted over a rotating shaft, is provided at the first end of the base 6. The rotating shaft is rotatably connected to the first end cover. A first bearing 2 and a limiting assembly are provided between the first end cover and the rotating shaft. One end of the rotating shaft extends out of the base 6 to form a shaft extension, i.e., the area where the vertical motor 1 connects to the load equipment. Depending on the operating conditions, the first end cover can be either the upper or lower end cover of the base 6, such as... Figure 1 As shown, when the first end cover is the upper end cover of the base 6, one end of the shaft extends from the lower end of the base 6, that is, the shaft extension of the vertical motor 1 is set downwards. This allows the load equipment connected to the vertical motor 1, such as a water pump or a fan, to be located below the vertical motor 1. Compared with the vertical motor 1 with the shaft extension set upwards, this causes the overall center of gravity of the vertical motor 1 and the load equipment to shift downwards, reducing the problem of the iron core of the rotor 7 or stator 3 shifting under the action of gravity, resulting in uneven air gap distribution between the rotor 7 and stator 3, thereby reducing the problem of low power operation or iron core loss of the vertical motor 1.

[0060] like Figure 1 As shown, a second bearing 5 is provided between the lower end cover of the base 6 and the rotating shaft. The lower end cover is rotatably connected to the rotating shaft. The first bearing 2 can be a thrust bearing, and the second bearing 5 can be a rolling bearing, such as a ball bearing.

[0061] The first limiting plate 8 and the second limiting plate 19 can be planar, or, as... Figure 2 As shown, the longitudinal section of the first limiting plate 8 is convex, and the second limiting plate 19 has a region protruding towards the direction of the rotating shaft, namely the first shoulder (or first step). The bottom diameter of the first limiting plate 8 is smaller than the top diameter of the second limiting plate 19, which forms a second shoulder (or second step) at the bottom of the first limiting plate 8 and the top of the second limiting plate 19. The outer ring of the first bearing 2 is located between the first step and the second step. The axial movement of the first bearing 2 can be limited by the first step and the second step, preventing the axial movement of the first bearing 2 and the rotor 7 from causing uneven air gap distribution. The first shoulder and the second shoulder are annular, or the annular step can be omitted. A limiting block extending radially along the rotating shaft can be provided inside the first limiting plate 8 and / or the second limiting plate 19. The limiting block is located on the movement trajectory of the first bearing 2, and the axial movement of the rotating shaft and the rotor 7 is suppressed by the limiting block. The first limiting plate 8 and the second limiting plate 19 can be connected by bolts, welding, or snap-fit. Figure 2 As shown, the bottom of the second limiting plate 19 is connected to the first mounting plate 12. The longitudinal section of the first mounting plate 12 is an inverted "convex" shape. The second mounting plate 13 is sleeved on the rotating shaft. The second mounting plate 13 is threadedly connected to the first mounting plate 12. The second mounting plate 13 and the rotating shaft can be an interference fit or a threaded connection. The first mounting plate 12 and the second limiting plate 19 can be bolted or welded. Alternatively, the second limiting plate 19 and the first limiting plate 8 or the first mounting plate 12 can be integrally formed. A cavity is formed between the first limiting plate 8, the second limiting plate 19, and the first mounting plate 12. The rotating shaft is rotatably connected to the cavity. A locking unit sleeved on the rotating shaft is provided inside the cavity. There is a first bearing 2 and an oil supply plate 11, which can also be called an oil throwing plate. The oil supply plate 11 has an oil inlet and an oil outlet. The first bearing 2 is connected to an external oil supply mechanism through the oil supply plate 11. The external oil supply mechanism includes a storage tank containing lubricating oil. The storage tank can be connected to the shell through a pipeline. An oil pump is provided on the pipeline. The oil pump inputs the lubricating oil in the storage tank into the oil inlet of the oil supply plate 11. After the lubricating oil is mixed evenly in the circumferential direction by the oil supply plate 11, it is thrown out from the oil outlet and thrown into the first bearing 2. Alternatively, a storage tank containing lubricating oil is used to inject lubricating oil into the shell. The lubricating oil entering the shell first enters the oil supply plate 11. After the oil supply plate 11 rotates and is mixed evenly in the circumferential direction, the lubricating oil is thrown out by the oil supply plate 11 and enters the first bearing 2 to lubricate the first bearing 2.

[0062] like Figure 1 As shown, the rotor 7 is fixed on the shaft, and the stator 3 is fixed on the base 6. Furthermore, the inner ring of the bearing is provided with a conductive layer and an insulating layer from the inside out. The insulating layer blocks the path of stray current through the first bearing 2 during the operation of the vertical motor 1, reducing insulation failure caused by assembly wear. The life of the first bearing 2 can reach about 120,000 hours, thereby reducing the cost of repairing and replacing the first bearing 2. The conductive layer can be a conductive metal structure layer, and the insulating layer can be a rubber layer.

[0063] Furthermore, the coil windings of stator 3 are bound together at both ends with insulating ropes or similar binding structures to prevent displacement of the coil windings during varnish impregnation (the stator 3 windings are impregnated vertically). Additionally, limiting blocks are provided at both ends of the copper bars of rotor 7 (i.e., limiting blocks that abut against the copper bars are provided at both ends of rotor 7) to prevent displacement of the copper bars due to long-term vibration during operation of the vertical motor 1.

[0064] like Figure 6 As shown, the cross-section of the base 6 of the three-dimensional motor in this invention is annular, that is, the base 6 is a cylindrical structure with a hollow cavity. This avoids the problem of stress concentration caused by abrupt changes in shape at the corners of the base 6 when the base 6 is a cubic structure, thus reducing the probability of damage and repair due to stress concentration. And / or, the base 6 is provided with several reinforcing members 18, thereby improving the strength and rigidity of the base 6, reducing the problem of resonance in the base 6, lowering the maintenance costs incurred due to resonance damage, and eliminating the step of increasing the wall thickness of the base 6 to ensure its strength in traditional technology, reducing the material consumption of the base 6, and thus reducing the manufacturing cost of the base 6. When the base 6 is... Figure 6 In the cylindrical structure shown, the reinforcing members 18 can be evenly distributed at multiple positions and in multiple directions along the circumferential and / or axial directions inside and / or outside the base 6, thereby uniformly improving the rigidity and strength of the base 6 and reducing the problem of damage to the base 6 due to collisions or resonance. The reinforcing members 18 can be made of materials that improve the strength and rigidity of the base 6, such as cast iron. The reinforcing members 18 can be reinforcing ribs or reinforcing blocks, and can be strip-shaped or arc-shaped.

[0065] The vertical motor 1 is connected to several coolers 4, thereby achieving effective heat dissipation for the vertical motor 1, promptly reducing its temperature, improving its performance, and extending its lifespan. For example... Figure 1As shown, the cooler 4 can be a water-cooled cooler or an air-cooled cooler, such as a backpack-type cooler produced by Shanghai Dongrun Heat Exchange Equipment Co., Ltd., and can be installed on one or both sides of the motor body. The vertical motor 1 in this invention also includes a base, which is located at the bottom of the base 6. The base and base 6 are detachably and fixedly connected, for example, by bolts, flanges, or other structures. When the structure of the vertical motor 1, excluding the base, is integrated inside the load equipment, such as a water pump or fan, no base is needed. However, when the structure of the vertical motor 1, excluding the base, needs to be fixed to a flat ground or frame, a base can be installed at the bottom of the base 6 as needed. Clearly, this invention can equip the motor body with a base according to the working conditions, providing stable support for the base 6. This reduces the weight of the vertical motor 1 excluding the base, facilitates worker operation, and simplifies the installation and commissioning process of the motor body. The base can be pre-tested in the factory. When assembling with the base 6, the base can be fixed to the foundation, and then aligned and connected.

[0066] In this invention, the various structures are arranged to avoid interference with each other, meaning that the positions of each structure do not interfere with each other, and their respective functions can be successfully realized. In this invention, "several" refers to at least one. This invention discloses multiple technical solutions, but does not provide any contrary technical teachings. Any content not covered in this invention is applicable to existing technologies.

[0067] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A vertical motor, characterized by, The vertical motor includes: A rotating shaft, on which a first bearing and a rotor are fixedly connected; A limiting assembly includes a first limiting plate, a locking unit, a first bearing, and a second limiting plate sequentially sleeved on the rotating shaft. Both the first and second limiting plates are rotatably connected to the rotating shaft. The first limiting plate is located on the axial movement trajectory of the locking unit. The locking unit and the rotating shaft are locked together circumferentially on the rotating shaft. The end of the locking unit near the first bearing abuts against the inner ring of the first bearing axially on the rotating shaft, and the outer ring of the first bearing abuts against the second limiting plate axially on the rotating shaft.

2. The vertical motor of claim 1, wherein The locking unit includes a first locking member and a first nut. The first locking member is located at the end of the first nut near the first bearing. The end of the first locking member near the first bearing abuts against the inner ring of the first bearing in the axial direction of the rotating shaft. The first nut is threaded to the rotating shaft. The outer side of the first nut is uniformly provided with A first locking grooves along the circumferential direction. The outer side of the first locking member is provided with B first locking teeth along the circumferential direction that lock and engage with the first locking grooves, and 4 < A ≤ 6, 6 < B ≤ 11. Alternatively, the locking unit includes a second nut and a second locking member. The second nut is threadedly connected to the shaft and is located at the end of the second locking member near the first bearing. The end of the second nut near the first bearing abuts against the inner ring of the first bearing in the axial direction of the shaft. The second locking member includes a plurality of third nuts arranged circumferentially along the second nut. The second nut and the third nuts are fastened together by locking bolts. A stop washer is provided between the second nut and the third nuts.

3. A vertical motor according to claim 2, characterized in that The first locking tooth is inclined and faces the first nut; And / or, the first locking tooth located between adjacent first locking slots engages with the end of the first nut facing the first locking member; And / or, A=6, B=11.

4. The vertical motor of claim 1, wherein An oil supply plate is fitted onto the rotating shaft, and the first bearing is connected to an external oil supply mechanism through the oil supply plate.

5. The vertical motor of claim 1, wherein The center height of the vertical motor is H, where H > 630 mm, and the stator diameter of the vertical motor is D, where D > 1080 mm.

6. The vertical motor of claim 1, wherein The vertical motor includes a base, a first end cover fitted over the rotating shaft at the first end of the base, the rotating shaft being rotatably connected to the first end cover, and a first bearing and a limiting component being provided between the first end cover and the rotating shaft, with one end of the rotating shaft extending out of the base.

7. A vertical motor according to claim 6, characterized in that The first end cover is an upper end cover, and one end of the rotating shaft extends out of the lower end of the base.

8. The vertical motor according to claim 6, characterized in that, The cross-section of the base is annular; and / or, the outer side of the base is provided with several reinforcing members.

9. The vertical motor according to claim 6, characterized in that, The base is connected to a plurality of coolers; and / or, the vertical motor further includes a base located at the bottom of the base and detachably connected to the base.

10. The vertical motor according to claim 1, characterized in that, The vertical motor also includes a bushing fitted over the first bearing, with a first insulating layer between the bushing and the first bearing, and a second insulating layer outside the bushing.

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