A motor structure and end cover locking structure thereof

Abstract

The present invention provides a motor structure and an end cover locking structure thereof, comprising a cover plate, an outer shell, a rotor and a first fan blade, the cover plate being fixed to the end of the outer shell by bolts, the rotor being rotatably connected to the cover plate, the first fan blade being fixed to the rotor and being located on the side of the cover plate facing away from the outer shell, the cover plate being provided with a first water pipe and a second water pipe, the outer shell being provided with a hot water absorption pipe, the two ends of the hot water absorption pipe being respectively connected to the first water pipe and the second water pipe, a fixing seat being fixedly connected to the cover plate, a receiving groove being provided on the fixing seat, the first water pipe and the second water pipe being respectively connected to the two ends of the receiving groove, an eccentric sleeve being rotatably connected in the receiving groove, the eccentric sleeve being eccentrically arranged between the eccentric sleeve and the rotor, the rotor rotating and causing water to be pressed from the first water pipe into the second water pipe through the connecting structure, the rotor being rotatably connected to the fixing seat and being coaxially arranged with the receiving groove, the outer wall of the eccentric sleeve being used to fit with the inner wall of the receiving groove, so as to achieve the purpose of improving heat dissipation.

Description

Technical Field

[0001] The invention relates to a motor, and in particular to a motor structure and an end cover locking structure thereof. Background Art

[0002] At present, a Chinese patent with authorization announcement number CN218335639U discloses a three-phase asynchronous motor, including a three-phase asynchronous motor body, one end of the three-phase asynchronous motor body close to the rear output shaft is fixedly connected to a fan cover, the rear output shaft of the three-phase asynchronous motor body is fixedly connected to a fan blade, an adjustment component and a dust cleaning component are arranged in the fan cover, and the adjustment component includes a docking block fixedly mounted on the rear output shaft of the three-phase asynchronous motor body and a first tension spring fixedly mounted on a side wall opposite to the rear output shaft of the three-phase asynchronous motor body.

[0003] The three-phase asynchronous motor has an adjustment component and a dust cleaning component, so that maintenance personnel do not need to remove the air cover from the three-phase asynchronous motor body during regular maintenance of the three-phase asynchronous motor, and can complete the cleaning work by externally manipulating the rotating shaft and the toggle block, thereby saving disassembly and installation time and improving maintenance efficiency.

[0004] However, during use, especially when high-power operation needs to be maintained for a long time, the wind generated by the rotation of the fan blades cannot provide good heat dissipation effect, which can easily cause the stator to overheat and be damaged. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a motor structure and an end cover locking structure thereof, so as to achieve the purpose of improving heat dissipation.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: an end cover locking structure, including a cover plate, an outer shell, a rotor and a first fan blade, the cover plate is fixed to the end of the outer shell by bolts, the rotor is rotatably connected to the cover plate, the first fan blade is fixed to the rotor and is located on the side of the cover plate facing away from the outer shell, the cover plate is provided with a first water pipe and a second water pipe, the outer shell is provided with a hot water absorption pipe, the two ends of the hot water absorption pipe are respectively connected with the first water pipe and the second water pipe, a fixing seat is fixedly connected to the cover plate, a receiving groove is provided on the fixing seat, the first water pipe and the second water pipe are respectively connected with the two ends of the receiving groove, an eccentric sleeve is rotatably connected in the receiving groove, the eccentric sleeve is eccentrically arranged between the rotor, the rotor rotates and presses water from the first water pipe into the second water pipe through the connecting structure, the rotor is rotatably connected to the fixing seat and is coaxially arranged with the receiving groove, and the outer wall of the eccentric sleeve is used to fit with the inner wall of the receiving groove.

[0007] To implement the above technical solution, the cover plate is fixed on the outer shell. When the rotor rotates, the rotor drives the first fan blade to rotate. The first fan blade blows wind toward the cover plate, and the water on the cover plate can be cooled. When the rotor rotates, the eccentric sleeve rotates through the connecting structure, sucking water from the first water pipe into the receiving tank, and then pressing the water from the receiving tank into the second water pipe. The water is introduced into the heat absorbing pipe to absorb the heat of the outer shell, and finally the water is re-introduced into the first water pipe, thereby realizing water circulation, so as to quickly cool down the outer shell, thereby improving the heat dissipation to adapt to long-term high-power operation.

[0008] As a preferred solution of the present invention, the connecting structure includes an eccentric column, a connecting rod, a connecting pipe, and a slider. The eccentric column is fixed on the rotor and is coaxially arranged with the eccentric sleeve. The connecting pipe is fixed on the fixed seat and is connected with the accommodating groove. The slider is slidably connected in the connecting pipe. One end of the connecting rod is fixedly connected to the eccentric sleeve, and the other end of the connecting rod is rotatably connected to the slider through the connecting column.

[0009] To implement the above technical solution, the rotor rotates, which drives the eccentric column to rotate, the eccentric sleeve and the eccentric column slide relative to each other and the eccentric sleeve moves. When the eccentric sleeve moves from a position close to the first water pipe to a position close to the second water pipe, the outer wall of the eccentric sleeve sticks to the inner wall of the receiving groove, and water is sucked from the first water pipe into the receiving groove, and the water is pressed out from the second water pipe. At the same time, the slider moves along the length direction of the connecting pipe, and the water not discharged from the second water pipe can be placed in the connecting pipe. Through the setting of the connecting rod, the eccentric sleeve cannot rotate with the eccentric wheel due to the action of friction, thereby reducing the wear between the eccentric sleeve and the fixed seat.

[0010] As a preferred solution of the present invention, it also includes a protective cover connected to the shell, the first fan blade and the cover plate are both located in the protective cover, and the protective cover is provided with a plurality of heat dissipation holes.

[0011] By implementing the above technical solution, the protection of the first fan blade is enhanced, and external air can enter the protective cover from the heat dissipation holes. After the wind blows toward the cover plate, the wind is discharged from the gap between the protective cover and the cover plate.

[0012] As a preferred solution of the present invention, a soft auxiliary water pipe is fixedly connected to the protective cover, the first water pipe is connected to the hot water absorption pipe through the soft auxiliary water pipe, and a part of the soft auxiliary water pipe is located between the first fan blade and the cover plate.

[0013] To implement the above technical solution, the heat on the outer shell is introduced into the protective cover through the heat-absorbing water pipe. Since the air flow rate in the protective cover is fast, the heat dissipation effect on the soft auxiliary water pipe can be greatly improved. In addition, part of the heat on the soft auxiliary water pipe can be transferred to the protective cover, further improving the heat dissipation effect.

[0014] As a preferred solution of the present invention, a rotating tube is sleeved on the rotor, a second fan blade is fixedly connected to the rotating tube, the second fan blade is located between the first fan blade and the cover plate, the rotating tube and the rotor have opposite directions, the first fan blade and the second fan blade both blow air toward the cover plate, the rotor rotates and causes the rotating tube to rotate through the conduction structure.

[0015] To implement the above technical solution, during the rotation of the rotor, the first blade and the second blade can both rotate, and both the first blade and the second blade blow air toward the cover plate, further improving the heat dissipation effect on the soft auxiliary water pipe and the cover plate, so that the outer shell can be cooled quickly, and because the rotation directions of the rotating pipe and the rotor are opposite, the vibration of the outer shell can be greatly reduced, thereby greatly extending the service life of the rotor.

[0016] As a preferred embodiment of the present invention, the conductive structure includes a fixed sleeve, a first wave groove, a support block, a displacement block and an L-shaped rod, the fixed sleeve is fixed on the rotor, the first wave groove is opened on the inner wall of the fixed sleeve and is connected end to end, the support block is fixed on the protective cover, the rotating tube is rotatably connected to the support block, the L-shaped rod is fixed to the support block, the L-shaped rod is provided with a displacement groove along its length direction, the fixed sleeve rotates and causes the displacement block to reciprocate along the length direction of the displacement groove through a linkage assembly.

[0017] To implement the above technical solution, the support block is fixed on the protective cover from the outside to the inside, the rotor rotates, the rotor drives the fixed sleeve to rotate, and the fixed sleeve makes the displacement block reciprocate along the length direction of the displacement slot through the linkage component, which is easy to operate.

[0018] As a preferred solution of the present invention, the linkage assembly includes a second wave groove, a rotating column, and a telescopic rod. The rotating column is fixed on the rotating tube. The rotating column, rotating tube, fixed sleeve, and rotor are coaxially arranged. The second wave groove is opened on the rotating column and connected end to end. The telescopic rod is slidably connected to the displacement block. The upper end of the telescopic rod is slidably connected to the first wave groove, and the lower end of the telescopic rod is slidably connected to the second wave groove.

[0019] To implement the above technical solution, the rotor rotates, and the rotor drives the fixed sleeve to rotate, and the inner wall of the first wave groove contacts the telescopic rod, so that the telescopic rod drives the displacement block to reciprocate along the length direction of the displacement groove. At the same time, the telescopic rod contacts the inner wall of the second wave groove, so that the telescopic rod drives the rotating column to rotate, so that the rotating column drives the rotating tube to rotate, so that the direction of rotation between the rotating tube and the rotor is opposite.

[0020] As a preferred solution of the present invention, a plurality of ventilation holes are provided on the end surface of the fixing sleeve, and the ventilation holes correspond to the second fan blades.

[0021] By implementing the above technical solution, the wind generated by the rotation of the first blade and the second blade can be blown directly onto the cover through the ventilation holes to enhance the heat dissipation effect, and the heat generated by the telescopic rod and the inner wall of the first wave groove and the heat generated by the telescopic rod and the inner wall of the second wave groove can be quickly dissipated.

[0022] The present invention also provides a motor structure, including a stator and an end cover locking structure, wherein the stator is fixed to the inner wall of the outer shell, a terminal box for electrical connection with the stator is fixed to the outer shell, the rotor is rotatably connected to the inside of the stator, and a sealing cover is fixedly connected to the terminal box.

[0023] By implementing the above technical solution and fixing the wires and the stator on the junction box, the motor structure installation can be completed, and the operation is simple.

[0024] As a preferred solution of the present invention, a plurality of heat sinks are fixedly connected to the outer wall of the housing.

[0025] By implementing the above technical solution and disposing the heat sink, the heat dissipation effect of the housing is further improved.

[0026] In summary, the present invention has the following beneficial effects:

[0027] 1. Combining the effects of water cooling and air cooling, greatly improving the heat dissipation of the shell;

[0028] 2. The first and second blades rotate in opposite directions, making the housing more stable and less prone to violent vibrations;

[0029] 3. The rotation of the first and second fan blades can generate a larger air volume and greatly improve the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0031] Figure 2 To show the structural diagram of the protective cover;

[0032] Figure 3 A schematic diagram showing the position of the cover plate;

[0033] Figure 4 To reflect the structural diagram of the fixed seat;

[0034] Figure 5 for Figure 4 A magnified image of point A;

[0035] Figure 6 A schematic diagram showing the position of the fixed sleeve;

[0036] Figure 7A schematic diagram showing the positions of the first fan blade and the second fan blade;

[0037] Figure 8 A cross-sectional schematic diagram showing a telescopic rod;

[0038] Fig. 9 A schematic diagram showing the position of the stator.

[0039] Figure numerals: 1, cover plate; 11, first water pipe; 12, second water pipe; 2, housing; 21, hot water absorption pipe; 3, rotor; 31, first fan blade; 4, fixing seat; 40, sealing plate; 41, receiving groove; 42, eccentric sleeve; 5, connecting structure; 51, eccentric column; 52, connecting rod; 53, connecting pipe; 54, slider; 55, connecting column; 6, protective cover; 61, left half; 62, right half; 63, soft auxiliary water pipe; 64 , heat dissipation holes; 7, rotating tube; 71, second fan blade; 8, conduction structure; 81, fixing sleeve; 82, first wave groove; 83, support block; 84, displacement block; 85, L-shaped rod; 851, displacement groove; 9, linkage assembly; 91, second wave groove; 92, rotating column; 93, telescopic rod; 931, inner rod; 932, sleeve; 933, spring; 94, ventilation hole; 100, junction box; 101, stator; 102, heat sink. DETAILED DESCRIPTION

[0040] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0041] Embodiment 1: An end cover locking structure comprises a cover plate 1, a housing 2, a rotor 3 and a first fan blade 31. The cover plate 1 is made of copper and is fixed to the end of the housing 2 by bolts. The rotor 3 is rotatably connected to the cover plate 1. The cover plate 1 and the rotor 3 are coaxially arranged.

[0042] The first blades 31 are fixed on the rotor 3 and are located on the side of the cover plate 1 facing away from the housing 2 . A plurality of first blades 31 are evenly distributed along the axis of the rotor 3 .

[0043] A first water pipe 11 and a second water pipe 12 are provided on the cover plate 1, and a hot water absorption pipe 21 is provided on the shell 2. The hot water absorption pipe 21 can be arranged in an S shape to spread throughout the shell 2, greatly improving the heat absorption effect of the shell 2. The two ends of the hot water absorption pipe 21 are connected to the first water pipe 11 and the second water pipe 12 respectively.

[0044] A fixing seat 4 is fixedly connected to the cover plate 1, and a sealing plate 40 is fixedly connected to the fixing seat 4. A receiving groove 41 with a circular cross section is provided on the fixing seat 4, and the first water pipe 11 and the second water pipe 12 are respectively connected to the two ends of the receiving groove 41. An eccentric sleeve 42 is rotatably connected in the receiving groove 41, and the eccentric sleeve 42 is eccentrically arranged between the rotor 3. The rotor 3 is rotatably connected to the fixing seat 4 and is coaxially arranged with the receiving groove 41. The rotor 3 rotates and presses water from the first water pipe 11 into the second water pipe 12 through the connecting structure 5, and the outer wall of the eccentric sleeve 42 is used to fit with the inner wall of the receiving groove 41.

[0045] The connection structure 5 includes an eccentric column 51, a connecting rod 52, a connecting pipe 53, and a slider 54. The eccentric column 51 is fixed on the rotor 3 and is coaxially arranged with the eccentric sleeve 42. The eccentric sleeve 42 is located outside the eccentric column 51 and has sliding friction with the eccentric column 51. The connecting pipe 53 is fixed on the fixing seat 4 and communicated with the receiving groove 41. The first water pipe 11 and the second water pipe 12 are respectively located on both sides of the connecting pipe 53. The slider 54 is slidably connected in the connecting pipe 53 and has a gap with the inner wall of the connecting pipe 53. One end of the connecting rod 52 is fixedly connected to the eccentric sleeve 42, and the other end of the connecting rod 52 is rotatably connected to the slider 54 through the connecting column 55. The connecting rod 52 swings back and forth along the axis of the connecting column 55.

[0046] During the rotation of the rotor 3, the eccentric sleeve 42 moves downward from a position close to the first water pipe 11 to a position close to the second water pipe 12. Since the eccentric sleeve 42 fits the inner wall of the receiving groove 41, a negative pressure can be formed at the opening of the first water pipe 11, and water is sucked from the first water pipe 11 into the receiving groove 41. The water on the side of the connecting rod 52 close to the second water pipe 12 is pressed into the second water pipe 12, thereby realizing the flow of water. As the first fan blade 31 rotates, the wind generated blows toward the cover plate 1, dissipating the heat of the water on the cover plate 1. Therefore, the cold water introduced from the second water pipe 12 into the hot water absorption pipe 21 gradually heats up and becomes hot water after passing through the shell 2 in the hot water absorption pipe 21.

[0047] The protective cover 6 is made of copper and fixed on the housing 2. The gap between the protective cover 6 and the cover plate 1, the first fan blade 31 and the cover plate 1 are all located in the protective cover 6. A plurality of heat dissipation holes 64 are opened on the protective cover 6. The protective cover 6 is formed by splicing and fixing a left half 61 and a right half 62. The left half 61 and the right half 62 are distributed along the radial direction of the protective cover 6. The heat dissipation hole 64 is located in the right half 62.

[0048] A soft auxiliary water pipe 63 is fixedly connected to the left half 61 of the protective cover 6, and the first water pipe 11 is connected to the hot water absorption pipe 21 through the soft auxiliary water pipe 63. A part of the soft auxiliary water pipe 63 is located between the first fan blade 31 and the cover plate 1, that is, it is suspended, thereby greatly improving the heat dissipation effect. The soft auxiliary water pipe 63 is made of heat-resistant rubber.

[0049] The rotor 3 is sleeved with a rotating tube 7, which is connected to the rotor 3 through a bearing so that the rotating tube 7 is coaxially arranged with the rotor 3. The rotating tube 7 is fixedly connected with a second blade 71, and a plurality of second blades 71 are evenly distributed along the axis of the rotating tube 7. The second blade 71 is located between the first blade 31 and the cover plate 1.

[0050] The rotation of the rotating tube 7 and the rotor 3 is opposite to each other to reduce vibration. The first blade 31 and the second blade 71 both blow air toward the cover plate 1, and the rotor 3 rotates and causes the rotating tube 7 to rotate through the conductive structure 8. The first blade 31 and the second blade 71 are staggered.

[0051] The conducting structure 8 comprises a fixing sleeve 81, a first wave groove 82, a support block 83, a displacement block 84 and an L-shaped rod 85. The fixing sleeve 81 is fixed on the rotor 3, and the fixing sleeve 81 is located between the second blade 71 and the cover plate 1. The first wave groove 82 is opened on the inner wall of the fixing sleeve 81, and the first wave groove 82 is connected from head to tail. The support block 83 is fixed on the left half 61 of the protective cover 6, and the rotating tube 7 is rotatably connected to the support block 83. The L-shaped rod 85 is fixed on the support block 83, and the L-shaped rod 85 is provided with a displacement groove 851 along its length direction, and the length direction of the displacement groove 851 is parallel to the axial direction of the fixing sleeve 81.

[0052] The fixing sleeve 81 rotates and causes the displacement block 84 to reciprocate along the length direction of the displacement slot 851 through the linkage assembly 9 .

[0053] The linkage assembly 9 includes a second wave groove 91, a rotating column 92, and a telescopic rod 93. The rotating column 92 is fixed on the rotating tube 7, and the rotating column 92, the rotating tube 7, the fixed sleeve 81, and the rotor 3 are coaxially arranged. The second wave groove 91 is opened on the rotating column 92 and connected end to end, and the telescopic rod 93 is slidably connected to the displacement block 84. The upper end of the telescopic rod 93 is slidably connected to the first wave groove 82, and the lower end of the telescopic rod 93 is slidably connected to the second wave groove 91. The widths of both ends of the first wave groove 82 are equal to the widths of both ends of the second wave groove 91. The bend of the first wave groove 82 corresponds to the bend of the second wave groove 91. The second wave groove 91 is projected onto the inner wall of the fixed sleeve 81 along the radial direction of the rotating column 92 to obtain the first wave groove 82.

[0054] The rotation directions between the fixed sleeve 81 and the rotating column 92 are opposite.

[0055] The telescopic rod 93 includes an inner rod 931, a sleeve 932 and a spring 933. The inner rod 931 is slidably connected to the sleeve 932, and the spring 933 is located in the sleeve 932, so that one end of the spring 933 is in contact with the inner wall of the sleeve 932, and the other end of the spring 933 is in contact with the inner rod 931. The inner rod 931 is slidably connected to the first wave groove 82, and the sleeve 932 is slidably connected to the second wave groove 91.

[0056] Accordingly, during the rotation of the rotor 3, the fixed sleeve 81 rotates, and the inner wall of the first wave groove 82 contacts the telescopic rod 93, so that the telescopic rod 93 drives the slider 54 to move back and forth along the length direction of the displacement groove 851. At the same time, the telescopic rod 93 contacts the inner wall of the second wave groove 91, so that the telescopic rod 93 drives the rotating column 92 to rotate, so that the rotating column 92 drives the rotating tube 7 to rotate, so that the rotation direction between the rotating tube 7 and the rotor 3 is opposite. By adjusting the density of the first wave groove 82 and the density of the second wave groove 91, the rotation speed of the first blade 31 can be equal to the rotation speed of the second blade 71.

[0057] A plurality of ventilation holes 94 are provided on the end surface of the fixing sleeve 81, and the ventilation holes 94 correspond to the second fan blades 71. The wind can pass through the ventilation holes 94 and blow toward the cover plate 1, and then be guided out from the gap.

[0058] Embodiment 2: A motor structure includes a stator 101 and an end cover locking structure of embodiment 1, a terminal box 100 for electrical connection with the stator 101 is fixed on the outer shell 2, the stator 101 is fixed on the inner wall of the outer shell 2, the rotor 3 is rotatably connected to the inside of the stator 101, and a sealing cover (not shown in the figure) is fixedly connected to the terminal box 100.

[0059] A plurality of heat sinks 102 are fixedly connected to the outer wall of the housing 2 .

[0060] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An end cover locking structure, comprising a cover plate (1), a housing (2), a rotor (3) and a first blade (31), wherein the cover plate (1) is fixed to the end of the housing (2) by bolts, the rotor (3) is rotatably connected to the cover plate (1), and the first blade (31) is fixed to the rotor (3) and is located on a side of the cover plate (1) facing away from the housing (2), wherein: The cover plate (1) is provided with a first water pipe (11) and a second water pipe (12); the shell (2) is provided with a hot water absorption pipe (21); the two ends of the hot water absorption pipe (21) are respectively connected to the first water pipe (11) and the second water pipe (12); the cover plate (1) is fixedly connected with a fixing seat (4); the fixing seat (4) is provided with a receiving groove (41); the first water pipe (11) and the second water pipe (12) are respectively connected to the receiving groove (41); ) are connected at both ends, an eccentric sleeve (42) is rotatably connected in the receiving groove (41), the eccentric sleeve (42) is eccentrically arranged between the eccentric sleeve (42) and the rotor (3), the rotor (3) rotates and presses water from the first water pipe (11) into the second water pipe (12) through the connecting structure (5), the rotor (3) is rotatably connected to the fixing seat (4) and is coaxially arranged with the receiving groove (41), and the outer wall of the eccentric sleeve (42) is used to fit with the inner wall of the receiving groove (41); The connecting structure (5) comprises an eccentric column (51), a connecting rod (52), a connecting pipe (53), and a sliding block (54); the eccentric column (51) is fixed on the rotor (3) and is coaxially arranged with the eccentric sleeve (42); the connecting pipe (53) is fixed on the fixing seat (4) and is connected with the accommodating groove (41); the sliding block (54) is slidably connected in the connecting pipe (53); one end of the connecting rod (52) is fixedly connected to the eccentric sleeve (42); and the other end of the connecting rod (52) is rotatably connected to the sliding block (54) via a connecting column (55).

2. The end cover locking structure according to claim 1, characterized in that: It also includes a protective cover (6) connected to the outer shell (2), the first fan blade (31) and the cover plate (1) are both located in the protective cover (6), and the protective cover (6) is provided with a plurality of heat dissipation holes (64).

3. The end cover locking structure according to claim 2, characterized in that: A soft auxiliary water pipe (63) is fixedly connected to the protective cover (6), and the first water pipe (11) is connected to the hot water absorption pipe (21) through the soft auxiliary water pipe (63), and a part of the soft auxiliary water pipe (63) is located between the first fan blade (31) and the cover plate (1).

4. The end cover locking structure according to claim 3 is characterized in that: The rotor (3) is sleeved with a rotating tube (7), and a second fan blade (71) is fixedly connected to the rotating tube (7). The second fan blade (71) is located between the first fan blade (31) and the cover plate (1). The rotating tube (7) and the rotor (3) have opposite directions of rotation. Both the first fan blade (31) and the second fan blade (71) blow air toward the cover plate (1). The rotor (3) rotates and causes the rotating tube (7) to rotate through the conductive structure (8).

5. The end cover locking structure according to claim 4, characterized in that: The conducting structure (8) comprises a fixing sleeve (81), a first wave groove (82), a supporting block (83), a displacement block (84) and an L-shaped rod (85); the fixing sleeve (81) is fixed on the rotor (3); the first wave groove (82) is formed on the inner wall of the fixing sleeve (81) and is connected end to end; the supporting block (83) is fixed on the protective cover (6); the rotating tube (7) is rotatably connected to the supporting block (83); the L-shaped rod (85) is fixed to the supporting block (83); the L-shaped rod (85) is provided with a displacement groove (851) along its length direction; the fixing sleeve (81) rotates and causes the displacement block (84) to reciprocate along the length direction of the displacement groove (851) through a linkage assembly (9).

6. The end cover locking structure according to claim 5, characterized in that: The linkage assembly (9) comprises a second wave groove (91), a rotating column (92), and a telescopic rod (93); the rotating column (92) is fixed on the rotating tube (7); the rotating column (92), the rotating tube (7), the fixed sleeve (81), and the rotor (3) are coaxially arranged; the second wave groove (91) is opened on the rotating column (92) and is connected end to end; the telescopic rod (93) is slidably connected to the displacement block (84); the upper end of the telescopic rod (93) is slidably connected to the first wave groove (82); and the lower end of the telescopic rod (93) is slidably connected to the second wave groove (91).

7. The end cover locking structure according to claim 6, characterized in that: A plurality of ventilation holes (94) are provided on the end surface of the fixing sleeve (81), and the ventilation holes (94) correspond to the second fan blades (71).

8. A motor structure, comprising a stator (101), characterized in that: It also includes an end cover locking structure as described in any one of claims 1 to 7, wherein the stator (101) is fixed to the inner wall of the outer shell (2), a terminal box (100) for electrical connection with the stator (101) is fixed to the outer shell (2), the rotor (3) is rotatably connected to the inside of the stator (101), and a sealing cover is fixedly connected to the terminal box (100).

9. A motor structure according to claim 8, characterized in that: A plurality of heat sinks (102) are fixedly connected to the outer wall of the housing (2).

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