Motor device

Abstract

The invention belongs to the technical field of motors, and particularly relates to a motor device which comprises a machine base, a stator is installed on the inner wall of the machine base, a rotor is rotatably installed on the inner side of the stator, a rotating shaft is fixedly inserted between the two ends of the rotor in a penetrating mode, the two ends of the rotating shaft are sleeved with bearings, and a plurality of supporting blocks are annularly distributed on the inner sides of the bearings. The supporting block is fixedly connected with the rotating shaft, the side, opposite to the bearing, of the supporting block is of an arc surface design, and a gap exists between the supporting block and the inner side of the bearing. Connection operation between the bearing and the rotating shaft is achieved through the multiple first jacking blocks and the multiple second jacking blocks, convenience of bearing installation is improved, when the bearing is replaced, the supporting force of the first jacking blocks and the second jacking blocks on the bearing can be relieved only by unscrewing a locking screw, a positioning screw and a threaded head in sequence, and the bearing replacement efficiency is improved. And then, the bearing can be easily taken down from the rotating shaft, so that the convenience of replacing the bearing is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a motor device. Background Art

[0002] Electric motors, commonly known as motors, refer to electromagnetic devices that convert or transmit electrical energy based on the law of electromagnetic induction. They are divided into electric motors (symbolized by M) and generators (symbolized by G). Existing electric motors mainly include a base, a stator, a rotor, a rotating shaft, and end covers. In order to ensure the flexibility of the rotor during rotation, bearings are generally installed at both ends of the rotating shaft where they connect to the end covers, thereby reducing the friction between the rotating shaft and the end covers.

[0003] The bearings on the existing motor shafts are generally installed with an interference fit with the shaft, and special disassembly tools are required for installation or disassembly. Since the bearings are always in a rotating state during the operation of the motor, they are also easily affected by high temperatures, causing the bearings to deform. When the deformed bearings cool and shrink, they are easily stuck with the shaft. At this time, in addition to the need for disassembly tools, the bearings must be burned and knocked, so that the deformed bearings and the shaft can be loosened by using the principles of thermal expansion and contraction and vibration, and then the bearings can be smoothly removed for replacement. Therefore, it is very inventive, and in the process of knocking the bearings, it is also easy to knock the shaft, causing deformation and damage to the shaft. Summary of the invention

[0004] In view of the above problems, the present invention provides a motor device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A motor device comprises a base, a stator is installed on the inner wall of the base, a rotor is rotatably installed inside the stator, a rotating shaft is fixedly inserted between the two ends of the rotor, bearings are sleeved at both ends of the rotating shaft, a plurality of support blocks are distributed in an annular manner on the inner side of the bearing, and the support blocks are fixedly connected to the rotating shaft, a side of the support block opposite to the bearing is designed as an arc surface, and a gap exists between the support block and the inner side of the bearing, a stopper is fixedly connected to one end of the support block close to the rotor, a plug hole is provided on the side of the support block opposite to the inner side of the bearing, a first top block is slidably inserted in the plug hole, threaded holes are provided at the axis center of both ends of the rotating shaft, and one side of the first top block located inside the rotating shaft is located at In the threaded hole, an adjustment component for driving multiple first top blocks to move is arranged in the threaded hole, an end cover is sleeved on the outer periphery of the bearing, the end cover is detachably connected to the machine base, a fixing ring is arranged on the side of the end cover away from the machine base, multiple locking screws are connected between the fixing ring and the end cover, a protective plate is rotatably installed on the inner side of the fixing ring, the protective plate is slidably sleeved on the rotating shaft, a strip-shaped guide groove is provided on the surface of the rotating shaft between two adjacent support blocks, multiple sliding grooves are provided on the side of the protective plate close to the bearing, and the groove wall of the sliding groove close to the side of the rotating shaft is designed to be open, multiple sliding grooves are opposite to multiple guide grooves one by one, and a support component is arranged in the guide groove.

[0007] Furthermore, the adjusting assembly includes an adjusting rod, an end of the adjusting rod away from the rotor is fixedly connected with a threaded head, the threaded head is threadedly inserted in the threaded hole, and a cross-shaped slot is provided at the free end of the threaded head, the end of the adjusting rod away from the threaded head is rotatably connected with a conical head, the diameter of the conical head gradually decreases in the direction away from the threaded head, the relative position of the first top block and the conical surface of the conical head is an inclined surface design, and the inclined surface of the first top block is parallel to and fits the conical surface of the conical head, a movable sleeve is rotatably sleeved on the adjusting rod, the diameter of the movable sleeve matches the inner diameter of the threaded hole, and both ends of the movable sleeve are designed with conical surfaces, a positioning screw is inserted with an inclined thread on the surface of the rotating shaft, the end of the positioning screw close to the rotor is inclined in the direction close to the adjusting rod, the end of the positioning screw close to the rotor is inserted in the threaded hole, and the end of the positioning screw located in the threaded hole fits with the conical surface of the movable sleeve close to the threaded head.

[0008] Furthermore, the guide groove includes a horizontal section and an inclined section, the inclined section is closer to the rotor than the horizontal section, the inclined section is opposite to the inner side of the bearing, and the depth of the inclined section gradually becomes shallower towards the rotor.

[0009] Furthermore, the support assembly includes a second top block, a side of the second top block opposite to the inclined section of the guide groove is designed with an inclined surface, the inclined surface of the second top block is parallel to and fits with the inclined surface of the inclined section of the guide groove, the length of the second top block is smaller than the length of the horizontal section of the guide groove, the end of the second top block close to the protective plate is slidably installed in the corresponding slide groove, a telescopic rod is vertically fixedly connected between the side of the second top block away from the rotating shaft and the groove wall of the slide groove close to the fixed ring, a return spring is sleeved on the telescopic rod, and the two ends of the return spring are respectively fixedly connected to the second top block and the groove wall of the slide groove close to the fixed ring.

[0010] Furthermore, the front and rear sides of the first top block are provided with receiving grooves, a bow-shaped spring piece is fixedly connected in the receiving groove, both ends of the bow-shaped spring piece are located in the receiving groove, the middle part of the bow-shaped spring piece is located outside the receiving groove and fits against the inner wall of the socket, and the bow-shaped spring piece can be completely received in the receiving groove, a groove is provided on the side of the first top block opposite to the bearing, a protrusion is provided at the opening of the groove, and the side of the protrusion close to the bearing is flush with the side of the first top block close to the bearing.

[0011] Furthermore, a plurality of fan blades are distributed in an annular manner on one side of the protective plate away from the bearing, the fan blades are fixedly connected to the protective plate, and the fan blades are opposite to the horizontal section of the guide groove, and a heat dissipation hole is opened between the front and rear ends of the second top block.

[0012] Furthermore, a plurality of rollers are installed in parallel on the inclined surface of the second top block, and the length direction of the rollers is perpendicular to the direction in which the second top block moves along the guide groove.

[0013] Furthermore, the thickness of the second top block at one end close to the protective plate is equal to the depth of the horizontal section of the guide groove, and the side of the second top block close to the rotating shaft can completely enter the corresponding sliding groove.

[0014] Furthermore, the first top block and the second top block are both designed with arc surfaces on one side close to the bearing, and the arc surfaces of the two can fit with the inner side of the bearing.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention realizes the connection operation between the bearing and the rotating shaft by using a plurality of first top blocks and a plurality of second top blocks, thereby improving the convenience of installing the bearing. When replacing the bearing, it is only necessary to loosen the locking screw, the positioning screw and the threaded head in sequence to release the supporting force of the first top block and the second top block on the bearing, and then the bearing can be easily removed from the rotating shaft, thereby improving the convenience of replacing the bearing.

[0017] 2. The present invention is provided with a bow-shaped spring sheet. When the first top block is inserted into the socket, the bow-shaped spring sheets on the front and rear sides of the first top block can be squeezed together with the front and rear inner walls of the socket under the action of their own elastic force, thereby playing a simple fixing role for the first top block inserted into the socket, and preventing the first top block in the socket with the opening facing downward from falling out of the socket under the action of gravity when the bearing is sleeved. When the first top block needs to be taken out of the socket, the protrusion at the opening of the groove can be hooked with a hook, so that the first top block in the socket can be conveniently pulled out by the pulling force of the hook on the protrusion;

[0018] 3. The present invention is provided with fan blades. When the shaft rotates, the shaft can drive the protective plate to rotate together through the force of the guide groove on the second top block. As the protective plate rotates, multiple fan blades can generate wind driven by the protective plate, and then the wind can enter the heat dissipation holes of the second top block through the guide groove, thereby dissipating heat for the second top block and the inner area of ​​the bearing, thereby improving the heat dissipation effect of the bearing, avoiding deformation of the bearing due to high temperature, and extending the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a first overall structural schematic diagram of the present invention;

[0020] Figure 2 is a second overall structural schematic diagram of the present invention;

[0021] Figure 3 It is a three-dimensional schematic diagram of the base, rotating shaft, stator and bearing in the present invention;

[0022] Figure 4 It is a three-dimensional schematic diagram of the rotating shaft, the rotor and the bearing in the present invention;

[0023] Figure 5 It is a three-dimensional schematic diagram of a part of the rotating shaft, the supporting block, the stopper and the first top block in the present invention;

[0024] Figure 6 The present invention Figure 4 A three-dimensional cross-sectional view of

[0025] Figure 7 It is a first stereoscopic schematic diagram of a part of the rotating shaft, the fixing ring, the protective plate and the locking screws in the present invention;

[0026] Figure 8 It is a second stereoscopic schematic diagram of a part of the rotating shaft, the fixing ring, the protective plate and the locking screws in the present invention;

[0027] Fig. 9 is a three-dimensional cross-sectional view of the first top block in the present invention;

[0028] Fig.10It is a three-dimensional schematic diagram of the fixing ring, the protection plate and the supporting assembly in the present invention.

[0029] In the figure: 1. base; 2. stator; 3. rotor; 4. rotating shaft; 5. bearing; 6. support block; 7. stopper; 8. first top block; 9. adjustment assembly; 91. adjustment rod; 92. threaded head; 93. conical head; 94. movable sleeve; 95. positioning screw; 10. end cover; 11. fixing ring; 12. locking screw; 13. protective plate; 14. guide groove; 141. horizontal section; 142. inclined section; 15. support assembly; 151. second top block; 152. telescopic rod; 153. reset spring; 16. bow-shaped spring piece; 17. groove; 18. bump; 19. fan blade; 20. heat dissipation hole; 21. roller shaft. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0031] The present invention provides Figures 1 to 9A motor device shown in the figure comprises a base 1, a stator 2 is mounted on the inner wall of the base 1, a rotor 3 is rotatably mounted inside the stator 2, a rotating shaft 4 is fixedly inserted between the two ends of the rotor 3, and bearings 5 ​​are sleeved on both ends of the rotating shaft 4, a plurality of support blocks 6 are distributed in an annular manner on the inner side of the bearing 5, and the support block 6 is fixedly connected to the rotating shaft 3, the side of the support block 6 opposite to the bearing 5 is of arc surface design, and there is a gap between the support block 6 and the inner side of the bearing 5, a stopper 7 is fixedly connected to the end of the support block 6 close to the rotor 3, a socket is provided on the side of the support block 6 opposite to the inner side of the bearing 5, a first top block 8 is slidably inserted in the socket, threaded holes are provided at the axial center of both ends of the rotating shaft 4, and the first top block 8 is located on one side of the rotating shaft 4 and is located in the threaded hole, an adjusting component 9 for driving the plurality of first top blocks 8 to move is provided in the threaded hole, an end cover 10 is sleeved on the outer periphery of the bearing 5, and the The end cover 10 is detachably connected to the base 1. A fixing ring 11 is provided on the side of the end cover 10 away from the base 1. A plurality of locking screws 12 are connected between the fixing ring 11 and the end cover 10. A protective plate 13 is rotatably installed on the inner side of the fixing ring 11. The protective plate 13 is slidably sleeved on the rotating shaft 4. A strip-shaped guide groove 14 is provided on the surface of the rotating shaft 4 between two adjacent support blocks 6. A plurality of slide grooves are provided on the side of the protective plate 13 close to the bearing 5, and the groove wall of the slide groove close to the side of the rotating shaft 4 is designed to be open. The plurality of slide grooves are opposite to the plurality of guide grooves 14 one by one, and a support assembly 15 is provided in the guide groove 14. The guide groove 14 includes a horizontal section 141 and an inclined section 142. The inclined section 142 is closer to the rotor 3 than the horizontal section 141. The inclined section 142 is opposite to the inner side of the bearing 5, and the depth of the inclined section 142 gradually becomes shallower towards the direction close to the rotor 3.

[0032] The adjusting assembly 9 comprises an adjusting rod 91, one end of the adjusting rod 91 away from the rotor 3 is fixedly connected with a threaded head 92, the threaded head 92 is threadedly inserted in the threaded hole, and a cross-shaped slot is provided at the free end of the threaded head 92, the one end of the adjusting rod 91 away from the threaded head 92 is rotatably connected with a conical head 93, the diameter of the conical head 93 gradually decreases in the direction away from the threaded head 92, the first top block 8 is designed as an inclined surface relative to the conical surface of the conical head 93, and the inclined surface of the first top block 8 and the conical surface of the conical head 93 are opposite to each other. The surfaces are parallel and fit together, a movable sleeve 94 is rotatably sleeved on the adjusting rod 91, the diameter of the movable sleeve 94 matches the inner diameter of the threaded hole, and both ends of the movable sleeve 94 are designed with conical surfaces, and a positioning screw 95 is inserted with an inclined thread on the surface of the rotating shaft 4, and the end of the positioning screw 95 close to the rotor 3 is inclined toward the direction close to the adjusting rod 91, and the end of the positioning screw 95 close to the rotor 3 is inserted in the threaded hole, and the end of the positioning screw 95 located in the threaded hole fits with the conical surface of the movable sleeve 94 close to the threaded head 92;

[0033] When installing the bearing 5, first insert the multiple first top blocks 8 into the jacks on the multiple support blocks 6 one by one, then sleeve the bearing 5 on the multiple support blocks 6 and tighten the stopper 7 on the bearing 5 support block 6. At this time, the multiple first top blocks 8 are located at relative positions on the inner side of the bearing 5, then insert the adjusting rod 91 into the threaded hole, and make the conical surface of the conical head 93 face the inclined surfaces of the multiple first top blocks 8, then use a screwdriver to screw the threaded head 92 so that it drives the conical head 93 to approach the first top block 8 through the adjusting rod 91. When the conical head 93 contacts the inclined surface parts of the multiple first top blocks 8, as the threaded head 92 continues to be screwed, the conical head 93 is moved. The shaped head 93 gradually generates thrust through its conical surface against the inclined surface of the first top block 8, so that the first top block 8 moves toward the direction close to the bearing 5. When the multiple first top blocks 8 are pressed against the inner side of the bearing 5, the positioning screw 95 is screwed into the rotating shaft 4. As the positioning screw 95 is gradually tightened, one end of the positioning screw 95 located in the threaded hole can gradually be pressed together with the conical surface of the movable sleeve 94 close to the end of the threaded head 92, so that the adjusting rod 91 is restricted by the movable sleeve 94, thereby preventing the multiple first top blocks 8 from being unable to maintain a tight contact with the inner side of the bearing 5 due to the loosening of the threaded head 92 during the rotation of the rotating shaft 4.

[0034] After the bearing 5 is pressed against by the multiple first top blocks 8, the protective plate 13 is sleeved onto the bearing 5. When the protective plate 13 moves to a position relative to the guide groove 14, the protective plate 13 is adjusted so that the multiple support components 15 can enter the multiple guide grooves 14 one by one. Then, the protective plate 13 is continuously pushed so that the multiple support components 15 can be pressed against the inner side of the bearing 5. Finally, the locking screw 12 is used to connect the fixing ring 11 and the end cover 10. As the locking screw 12 is gradually tightened, the protective plate 13 also pushes the multiple support components 15 and the inner side of the bearing 5 to be squeezed together under the pull of the locking screw 12, thereby cooperating with the multiple first top blocks 8 to improve the fixing effect of the bearing 5, and further improve the stability of the connection between the bearing 5 and the rotating shaft 4.

[0035] When the bearing 5 needs to be replaced, the locking screw 12, the positioning screw 95 and the threaded head 92 are loosened in sequence to release the supporting force of the first top block 8 and the second top block 151 on the bearing 5. Then the bearing 5 can be easily removed from the shaft 4, which improves the convenience of replacing the bearing 5 and avoids deformation and damage of the shaft 4 caused by knocking during the existing replacement of the bearing 5.

[0036] like Figures 5 to 10As shown, the support assembly 15 includes a second top block 151, and the side of the second top block 151 opposite to the inclined section 142 of the guide groove 14 is designed as an inclined surface. The inclined surface of the second top block 151 is parallel to and fits with the inclined surface of the inclined section 142 of the guide groove 14. The length of the second top block 151 is less than the length of the horizontal section 141 of the guide groove 14. The end of the second top block 151 close to the protective plate 13 is slidably installed in the corresponding slide groove. The side of the second top block 151 away from the rotating shaft 4 is vertically fixedly connected to the groove wall of the slide groove close to the fixing ring 11. There is a telescopic rod 152, on which a return spring 153 is sleeved, and the two ends of the return spring 153 are respectively fixedly connected to the second top block 151 and the groove wall of the slide groove near the fixed ring 11. The thickness of the second top block 151 near the protective plate 13 is equal to the depth of the horizontal section 141 of the guide groove 14, and the side of the second top block 151 near the rotating shaft 4 can completely enter the corresponding slide groove. The first top block 8 and the second top block 151 near the bearing 5 are both designed with arc surfaces, and the arc surfaces of the two can fit with the inner side of the bearing 5.

[0037] When the bearings 5 ​​are sleeved on the plurality of support blocks 6 and are squeezed from the inside by the plurality of first top blocks 8, the protective plate 13 is sleeved on the rotating shaft 4 from the end portion of the rotating shaft 4. During the sleeve connection process, when the inclined surface portions of the plurality of second top blocks 151 contact the end edge of the rotating shaft 4, the second top blocks 151 can move along the slide groove in the direction away from the rotating shaft 4 under the pressure of the edge of the rotating shaft 4. As the second top blocks 151 move along the slide groove, the telescopic rod 152 and the return spring 153 are gradually compressed. When the second top blocks 151 completely enter the corresponding slide groove under the pressure of the edge of the rotating shaft 4, the protective plate 13 can be sleeved on the rotating shaft 4. Then the protective plate 13 is pushed to move in the direction close to the bearing 5. When the protective plate 13 moves to the position of the guide groove 14, the protective plate 13 is rotated so that the plurality of second top blocks 151 can be opposite to the plurality of guide grooves 14 one by one. When the second top blocks 151 are directly opposite to the guide groove 14, the second top blocks 151 can Under the action of the elastic force of the return spring 153, it is pressed into the horizontal section 141 of the guide groove 14, and then continues to push the protective plate 13, so that it pushes multiple second top blocks 151 to move along the guide groove 14. When the inclined surface part of the second top block 151 is opposite to the inclined surface part of the guide groove 14, the second top block 151 also enters the inner area of ​​the bearing 5. At this time, as the protective plate 13 continues to be pushed, the multiple second top blocks 151 can gradually approach the inner side of the bearing 5 under the pushing action of the inclined section 142 of the guide groove 14. When the multiple second top blocks 151 contact the inner side of the bearing 5, the locking screw 12 is used to connect the fixing ring 11 and the end cover 10, and as the locking screw 12 is gradually tightened, the protective plate 13 also pushes the multiple second top blocks 151 and the inner side of the bearing 5 to be squeezed together under the pull of the locking screw 12, thereby cooperating with the multiple first top blocks 8 to improve the fixing effect of the bearing 5, thereby improving the stability of the connection between the bearing 5 and the rotating shaft 4.

[0038] like Fig. 9 As shown, the front and rear sides of the first top block 8 are provided with receiving grooves, and a bow-shaped spring piece 16 is fixedly connected in the receiving groove. Both ends of the bow-shaped spring piece 16 are located in the receiving groove, and the middle part of the bow-shaped spring piece 16 is located outside the receiving groove and fits with the inner wall of the insertion hole, and the bow-shaped spring piece 16 can be completely received in the receiving groove. A groove 17 is provided on the side of the first top block 8 opposite to the bearing 5, and a convex block 18 is provided at the opening of the groove 17, and the side of the convex block 18 close to the bearing 5 is flush with the side of the first top block 8 close to the bearing 5;

[0039] By providing the bow-shaped spring pieces 16, when the first top block 8 is inserted into the insertion hole, the bow-shaped spring pieces 16 on the front and rear sides of the first top block 8 can be squeezed together with the front and rear inner walls of the insertion hole under the action of their own elastic force, thereby playing a simple fixing role for the first top block 8 inserted into the insertion hole, and preventing the first top block 8 in the insertion hole with the opening facing downward from falling out of the insertion hole under the action of gravity when the bearing 5 is sleeved;

[0040] By providing a groove 17 on the first top block 8, when the first top block 8 needs to be taken out from the socket, a hook can be used to hook the protrusion 18 at the opening of the groove 17, so that the first top block 8 in the socket can be easily pulled out by the pulling force of the hook on the protrusion 18.

[0041] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, a plurality of fan blades 19 are distributed in an annular manner on one side of the protective plate 13 away from the bearing 5, and the fan blades 19 are fixedly connected to the protective plate 13, and the fan blades 19 are opposite to the horizontal section 141 of the guide groove 14, and a heat dissipation hole 20 is opened between the front and rear ends of the second top block 151;

[0042] By providing the fan blades 19, when the rotating shaft 4 rotates, the rotating shaft 4 can drive the protective plate 13 to rotate together through the force of the guide groove 14 on the second top block 151. As the protective plate 13 rotates, the multiple fan blades 19 can generate wind driven by the protective plate 13, and then the wind can enter the heat dissipation holes 20 of the second top block 151 through the guide groove 14, thereby dissipating the heat for the second top block 151 and the inner area of ​​the bearing 5, thereby improving the heat dissipation effect of the bearing 5, avoiding deformation of the bearing 5 due to high temperature, and extending the service life of the bearing 5.

[0043] like Fig.10 As shown, a plurality of rollers 21 are installed in parallel on the inclined surface of the second top block 151, and the length direction of the rollers 21 is perpendicular to the direction in which the second top block 151 moves along the guide groove 14;

[0044] By providing the roller 21 , when the second top block 151 moves along the inclined section 142 of the guide groove 14 under the push of the protective plate 13 , the roller 21 can roll against the inclined section 142 of the guide groove 14 , thereby reducing the resistance encountered by the second top block 151 during movement.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A motor device, comprising a base (1), characterized in that: A stator (2) is mounted on the inner wall of the base (1), a rotor (3) is rotatably mounted on the inner side of the stator (2), a rotating shaft (4) is fixedly inserted and penetrated between the two ends of the rotor (3), bearings (5) are sleeved on the two ends of the rotating shaft (4), a plurality of support blocks (6) are annularly distributed on the inner side of the bearing (5), and the support block (6) is fixedly connected to the rotating shaft (3), the side of the support block (6) opposite to the bearing (5) is designed as an arc surface, and there is a gap between the support block (6) and the inner side of the bearing (5), a stopper (7) is fixedly connected to one end of the support block (6) close to the rotor (3), a plug hole is provided on the side of the support block (6) opposite to the inner side of the bearing (5), a first top block (8) is slidably inserted in the plug hole, threaded holes are provided at the axis center of the two ends of the rotating shaft (4), and the side of the first top block (8) located inside the rotating shaft (4) is located in the threaded hole, and a An adjusting assembly (9) drives the plurality of first top blocks (8) to move, the outer periphery of the bearing (5) is sleeved with an end cover (10), the end cover (10) is detachably connected to the machine base (1), a fixing ring (11) is provided on the side of the end cover (10) away from the machine base (1), a plurality of locking screws (12) are connected between the fixing ring (11) and the end cover (10), a protective plate (13) is rotatably mounted on the inner side of the fixing ring (11), the protective plate (13) is slidably sleeved on the rotating shaft (4), a strip-shaped guide groove (14) is provided on the surface of the rotating shaft (4) between two adjacent support blocks (6), a plurality of slide grooves are provided on the side of the protective plate (13) close to the bearing (5), and the groove wall of the slide groove close to the side of the rotating shaft (4) is of an open design, a plurality of the slide grooves are opposite to a plurality of guide grooves (14) one by one, and a supporting assembly (15) is provided in the guide groove (14).

2. The motor device according to claim 1, characterized in that: The adjusting assembly (9) comprises an adjusting rod (91), one end of the adjusting rod (91) away from the rotor (3) is fixedly connected to a threaded head (92), the threaded head (92) is threadedly inserted into the threaded hole, and a cross-shaped slot is provided at the free end of the threaded head (92), one end of the adjusting rod (91) away from the threaded head (92) is rotatably connected to a conical head (93), the diameter of the conical head (93) gradually decreases in a direction away from the threaded head (92), the first top block (8) and the conical head (93) are in a position where the conical surface relative to the conical head (93) is designed as an inclined surface, and the inclined surface of the first top block (8) and the conical head (93) are in contact with each other. The conical surface of the adjusting rod (91) is parallel to and fits with the conical surface of the adjusting rod (91). A movable sleeve (94) is rotatably sleeved on the adjusting rod (91). The diameter of the movable sleeve (94) matches the inner diameter of the threaded hole, and both ends of the movable sleeve (94) are designed with conical surfaces. A positioning screw (95) is inserted into the inclined thread on the surface of the rotating shaft (4). The end of the positioning screw (95) close to the rotor (3) is inclined in the direction close to the adjusting rod (91). The end of the positioning screw (95) close to the rotor (3) is inserted into the threaded hole, and the end of the positioning screw (95) located in the threaded hole fits with the conical surface of the movable sleeve (94) close to the threaded head (92).

3. The motor device according to claim 2, characterized in that: The guide groove (14) comprises a horizontal section (141) and an inclined section (142); the inclined section (142) is closer to the rotor (3) than the horizontal section (141); the inclined section (142) is opposite to the inner side of the bearing (5); and the depth of the inclined section (142) gradually becomes shallower towards the direction approaching the rotor (3).

4. The motor device according to claim 3, characterized in that: The support assembly (15) comprises a second top block (151), the side of the second top block (151) opposite to the inclined section (142) of the guide groove (14) is designed as an inclined surface, the inclined surface of the second top block (151) is parallel to and fits with the inclined surface of the inclined section (142) of the guide groove (14), the length of the second top block (151) is less than the length of the horizontal section (141) of the guide groove (14), the end of the second top block (151) close to the protective plate (13) is slidably installed in the corresponding slide groove, a telescopic rod (152) is vertically fixedly connected between the side of the second top block (151) away from the rotating shaft (4) and the groove wall of the slide groove close to the fixed ring (11), the telescopic rod (152) is sleeved with a return spring (153), and the two ends of the return spring (153) are respectively fixedly connected to the second top block (151) and the groove wall of the slide groove close to the fixed ring (11).

5. The motor device according to claim 3, characterized in that: The front and rear sides of the first top block (8) are both provided with receiving grooves, and a bow-shaped spring piece (16) is fixedly connected in the receiving groove, both ends of the bow-shaped spring piece (16) are located in the receiving groove, the middle part of the bow-shaped spring piece (16) is located outside the receiving groove and fits with the inner wall of the insertion hole, and the bow-shaped spring piece (16) can be completely received in the receiving groove, and a groove (17) is provided on the side of the first top block (8) opposite to the bearing (5), and a convex block (18) is provided at the opening of the groove (17), and the side of the convex block (18) close to the bearing (5) is flush with the side of the first top block (8) close to the bearing (5).

6. The motor device according to claim 5, characterized in that: A plurality of fan blades (19) are distributed in an annular manner on one side of the protective plate (13) away from the bearing (5), the fan blades (19) are fixedly connected to the protective plate (13), and the fan blades (19) are opposite to the horizontal section (141) of the guide groove (14), and a heat dissipation hole (20) is provided between the front and rear ends of the second top block (151).

7. The motor device according to claim 6, characterized in that: A plurality of rollers (21) are installed in parallel on the inclined surface of the second top block (151), and the length direction of the rollers (21) is perpendicular to the direction in which the second top block (151) moves along the guide groove (14).

8. The motor device according to claim 7, characterized in that: The thickness of the second top block (151) at one end close to the protective plate (13) is equal to the depth of the horizontal section (141) of the guide groove (14), and the side of the second top block (151) close to the rotating shaft (4) can completely enter the corresponding sliding groove.

9. The motor device according to claim 8, characterized in that: The first top block (8) and the second top block (151) are both designed with arc surfaces on the side close to the bearing (5), and the arc surfaces of the two can fit with the inner side of the bearing (5).

Images